Perhaps you should try some spelling variations:
position detection » pollution detection, motion detection, collision detection
detection methods » detection method, extraction methods, collection methods
array formats » array format, assay formats, array formulas
array sharing » arrays bearing, array imaging, way sharing
array string » array strong, arrays strings, array forming

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

• Performing a fuzzy search may retrieve terms with similar spellings: position detection methods tools ((((array string) or (array formats))) or (array sharing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: position detection methods tools ((((array string) OR (array formats))) OR (array sharing)).
• Adding a wildcard symbol may retrieve word variants: position detection methods tools ((((array string) or (array formats))) or (array sharing))*.