Perhaps you should try some spelling variations:
teaching decision » teaching design, learning decision, taking decision
https teaching » states teaching, arts teaching, its teaching
array formulas » area formulas, harrop formulas, array format
array forming » array format, array arcing, array fermi
array sharing » array string, arrays bearing, array imaging

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

• Performing a fuzzy search may retrieve terms with similar spellings: bioinformatics https teaching decision ((array formulas) or (((array forming) or (array sharing))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bioinformatics https teaching decision ((array formulas) OR (((array forming) OR (array sharing)))).
• Adding a wildcard symbol may retrieve word variants: bioinformatics https teaching decision ((array formulas) or (((array forming) or (array sharing))))*.