Talvez debería tentar con algunhas variantes ortográficas:
irrigation requirements » irrigation equipment, nutrition requirements
requirements sources » requirements styles, requirements systems, requirements changes
sources provision » resource provision, sources vision, course provision
array string » array strong, arrays strings, array sharing
array paving » array planning, array imaging, array probing
arrays ang » arrays a

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 sources provision ((((array string) or (arrays ang))) or (array paving))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements sources provision ((((array string) OR (arrays ang))) OR (array paving))*.