Perhaps you should try some spelling variations:
estimation detection » estimation detecting, respiration detection, activation detection
detection methods » detection method, extraction methods, collection methods
methods rules » methods role, methods results, methods tables
array sharing » array string, arrays bearing, array imaging
array arcing » array forming, array probing, array using

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

• If you are trying to use Boolean operators, they must be ALL CAPS: estimation detection methods rules ((((array sharing) OR (array format))) OR (array arcing))~.
• Adding a wildcard symbol may retrieve word variants: estimation detection methods rules ((((array sharing) or (array format))) or (array arcing))*.