Tips to search effectively in Google...

Use things like quotes "" AND OR

The key to effective search is to use as few words as possible and the second thing is to avoid the common words(like of, for, in, to,etc).Also, use abbreviations if you can. For example, if you have to search for "Address of Indian Institute of Technology, Delhi" you should just type "address IIT-D" and you will get the result.

For effective searching use the "keywords", these are nothing but the main word which is having the high priority over the other. Use the appropriate words in double quotes or in single quotes. If you want to use more than one keywords then type them by seperate with a comma.