Chrome Spell Checker

When I don't know how to spell a word and chrome underlines it, I right click and usually never get any options (because I am a terrible speller). The funny thing is, when I copy and paste the word into a Google search bar, they always know what word I am looking for. Like magic i then copy and paste the word into my document and continue. Why dont they open up the spelling API for chrome so it can get suggestions from Google rather than some dictionary that doesn't work?