What is the default type search done by google, while, processing a query. Does it do 'broad' 'phrase' or 'exact' match searches?
It's not really that simple when you factor in personalization, Google's tendency to use synonyms or "corrected" spellings rather than what you actually tell it, etc. but here's Google basic search help page with a quick overview of how it treats your terms. Phrase searching is triggered with quotes. You'll have to explain how that's different from "exact" searches.
Reading all of that page will probably answer several other questions you likely have.