Perhaps you should try some spelling variations:
information preservation » information presentation, information representation, information generation
preservation fat » preservation fast, preservation part, preservation a
based grouping » based cropping, blood grouping, based group
fat decision » fate decision, fast decision, sat decision
i grouping » a grouping, 5 grouping, 3 grouping
_ grouping » _ growing

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information preservation fat decision ((((based grouping) or (i grouping))) or (_ grouping))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information preservation fat decision ((((based grouping) OR (i grouping))) OR (_ grouping)).
• Adding a wildcard symbol may retrieve word variants: information preservation fat decision ((((based grouping) or (i grouping))) or (_ grouping))*.