Article directory
1 Overview
The data in the Internet age is growing explosively, and the data we can access is becoming more and more abundant. A search engine is a huge data platform, and it is also the first choice for ordinary people to obtain knowledge/data. However, many of the materials on the platform are advertising or low-relevance, and it is necessary to master filtering skills to quickly and accurately obtain the required materials.
2. Prerequisite knowledge
2.1 Basic elements of web pages
- title: The title of the page, briefly covering the topic of the article.
- description: The descriptive content of the web page, which tells the content of the web page in more detail.
- key: Keyword, through which the webpage can be searched, usually extracted from the title and description.
2.2 How to recognize an advertisement
Explanation
There will be words such as "advertisement" and "promotion" for the content of the advertisement
3. Common commands
("")Double quotes
Description
Put the search term in English double quotation marks , which means an exact match, and the search engine will not perform word segmentation before searching. Search results include all words that appear in double quotation marks, and the order between ligatures is also consistent.
Format
"xxxxxx"
Example
PS:
There are advertisements in the search results in the image above, how to remove them? see below
(-) minus sign
Description
The minus sign (-) command in English means that the result of a certain keyword does not contain the word after the minus sign, and all quotation marks are not required. When using this command, there must be a space before the minus sign, and there is no space after the minus sign, followed by the words that need to be excluded
Format
xxxxxx -aa
Example
Search for "Bitcoin", and a large number of "quotes" appear, and then we need to delete it.
Remove specified words:
site
Description
Search for all files included in the search engine for a certain domain name. Baidu, Google, Yahoo and other major search engines all support this command.
Format
site:aa.com
example
domain
Description
Use the domain command to find information or reverse links related to a certain website. Currently, this command is only applicable to Baidu.
Format
domain:xxx.com
example
inurl
Description
The command is used to search for pages whose query words appear in the url. Both Baidu and Google support the inurl command, and the inurl command supports Chinese and English.
Format
inurl:xxx
example
allinurl
Description
Similar to inurl, the difference is that the allinurl command can query multiple keywords at the same time
Format
allurl:aaa.com bbb.com
example
intitle
Description
This command returns pages containing keywords in the page title. Both Baidu and Google support this directive.
Format
intitle:xxxxxx
example
allintitle
Description
The meaning is similar to intitle. It is also the query page title that contains keywords. The only difference is that
the allintitle command can query multiple keywords at the same time.
Format
alltitle:aaa bbb
example
filetype
Description
It can be used to search for a specific file format. If iletype:all is used, it will search for all formats. Baidu only supports: pdf, doc, ppt, xls, rtf, all, etc.
Format
xxx filetype:pdf
example
and
Description
Use and to indicate that the two keywords before and after are the logical relationship
format of "and"
aaa and bbb
example
or
Description
Use or (|) to indicate the logical relationship between the two words before and after is "or".
Format
aaa or bbb
example
4. Scenario Analysis
4.1 Remove ads
You can use intitle or double quotes, but the removal is incomplete. It is possible to filter using the Google Chrome add-on.
4.2 Combined instruction 1
site:网址 关键词
4.3 Combined instruction 2
5. Summary
There are a lot of instructions, but it only needs to be combined and used in normal times to achieve practice makes perfect and flexible use.