Basic skill of searching

I find some useful small searching technique today.

I list them below as a memoir:

1. use site: xxx.com   to search what you want in xxx.com.

2. use filetype:pdf to search pdf file.

3. use intitle: to search those website which has key words in their titles.

4. use google

 

a useful searching website: http://search.chongbuluo.com/