Google has shared some Google Search Tricks for users to help you find what you are searching on internet
Find all possible relevent options, add asterisk '*' before you want to searching words.
For specific search result put '-' before word you want to exclude
Search for query with price, use specific amount and currency in search
Search for a price
If your are searching specific content on a perticular site, add 'site:' before sitename.
Spedific search on a site
For this use 'releted:' terms by the name of the site you like.
For perticular file type 'filetype:' follower by you are looking for.
find a perticular file
Search for synonyms of word, use '-' in search phrase
search for synonyms