Search for variants of following terms or names

Similarity and misspellings by low edit distance (Levensthein distance)

(Example: Search for misspelling would find misspelign or some OCR failures in scanned documents)

Compounded words

(Example: Search for walk would find sleepwalk)
(Example: Search for sleep would find sleepwalk)

Proximity

Todo. (Example: Search for Barack Obama would find Barack Hussein Obama)

Filter query

Results have to match this additional query part, too. So its not enough to match only the search entry of the list.

I.e. for filtering with additional criterias like a path, person or project name. Or to search only in some documents, data or context.