Here you can specify a list of words which each field must contain.
To specify a phrase which must appear in the field surround your phrase with double quotes "".
By adding a - before the word or phrase you can specify words or phrases to exclude from the search.
For example a search for "Imagen Enterprise Video" -Platform, will search for the phrase "Imagen Enterprise Video" but without the word Platform.
To search for partial words you should use * as a wildcard. For example a search for 'Platform*' will result in hits for any word beginning with 'Platform'.