Use Quotation marks if you are searching for something specific.
Use a dash after a search item if you are looking for something that possibly has more than one meaning.
If you are searching for something within a website itself - type Site:
If you want to find a website related to a URL you already know
When searching for specific words in text
When looking for words in title
In case you are looking for information related to a particular location
When you are looking for a file in a particular format
While looking for a number range
And use an asterisk if you don't remember certain words in a phrase (toi)