Perhaps you should try some spelling variations:
formation process » formation processes, creation process, fermentation process
process learning » problems learning, process planning, process mining
learning session » learning section, learning decision, learning series
array formats » assay formats, array formulas, ready 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 process learning session ((((array formats) or (array string))) or (array format))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: formation process learning session ((((array formats) OR (array string))) OR (array format)).
• Adding a wildcard symbol may retrieve word variants: formation process learning session ((((array formats) or (array string))) or (array format))*.