1. Double quotation marks (" ")
Format: "keyword"
Concept: The meaning of this instruction is to match the search exactly, that is to say, the search result page must contain all the words in the double quotation marks, and the order cannot be disrupted, and the words cannot be separated.
2. Minus sign (-)
Format: Keyword A - Keyword B
Concept: A space must be added after the keyword A. This directive means that the search results do not contain keyword B.
3、intitle
Format: intitle:keyword
Concept: The keyword is preceded by an English colon. This instruction means that in the search results, the title must contain the keywords you entered. Otherwise, if you simply enter a keyword, the search result may only contain the keyword in the web page, but there is no keyword in the title, and you will not get accurate results.
4、filetype
format:filetype:file format keyword
Concept: The meaning of this command is to display only links whose keywords are in a certain file format. Among them, Baidu only supports these file formats: pdf, doc, xls, ppt, rtf, all. ("all" refers to searching all supported file types on Baidu). And Google can support all the file formats in Baidu, plus HTML, PHP and so on.
5、inurl
Format:inurl:xxx + keyword
Concept: inurl can be regarded as a compound word composed of "in" and "url" (Uniform Resource Locator). The meaning of this instruction is that it is only limited to search in the url of xxx, xxx can be any character, supports Chinese and English. You can add keywords or not.
6、site
Format: site:domain name
Concept: This advanced search command is used to search all files under a domain name.
6. Wildcards
Format: related *words
Asterisks are common wildcards that can also be used in search engines.
REFER
1. YouTube video download: http://en.savefrom.net/
2. Domestic video website content download & viewing: http://www.flvcd.com/
& http://www.yunbowang.cn/