Best practice for Fuzzy Search combined with Phrase Queries

[Markus Lang <ma...@gmail.com>]

Hi,
I am interested in best practices on how to handle phrase queries where
only a part of the phrase may match and / or the user made some typos.
Are there any papers on when to use only a part of the query phrase or how
many words of the phrase should rather be corrected before skipping them?
Does anyone know how e.g. Google or Amazon deals with these issues?

Best regards

Markus