Perhaps you should try some spelling variations:
location determination » position determination, validation determination, pollution determination
determination methods » examination methods, detection methods
array formulas » area formulas, harrop formulas, array format
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, 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: location determination methods tools ((((array string) OR (array formulas))) OR (array arcing))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "location determination methods tools ((((array string) OR (array formulas))) OR (array arcing))".
• Adding a wildcard symbol may retrieve word variants: location determination methods tools ((((array string) OR (array formulas))) OR (array arcing))*.