Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements over » requirements one, requirements come, requirements onn
over dimensional » lower dimensional, one dimensional, level dimensional
bioarrays » bioardays, bioarray, bioarways
rays » days, ray, ways

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

• Performing a fuzzy search may retrieve terms with similar spellings: irrigation requirements over dimensional (((bioarrays or bioarray) from) or (rays from))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements over dimensional (((bioarrays OR bioarray) from) OR (rays from)).
• Adding a wildcard symbol may retrieve word variants: irrigation requirements over dimensional (((bioarrays or bioarray) from) or (rays from))*.