Perhaps you should try some spelling variations:
formation progress » formation process, formation problems, information programs
based discussion » brief discussion
progress based » process based, programs based, progress case
array formulas » area formulas, harrop formulas, array formats
array string » array strong, arrays strings, array sharing

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

• Performing a fuzzy search may retrieve terms with similar spellings: formation progress based discussion ((array formulas) or (((array string) or (array format))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: formation progress based discussion ((array formulas) OR (((array string) OR (array format)))).
• Adding a wildcard symbol may retrieve word variants: formation progress based discussion ((array formulas) or (((array string) or (array format))))*.