Perhaps you should try some spelling variations:
estimation detecting » estimation testing, optimization detecting, estimation determining
detecting methods » detection methods, detection method, testing methods
methods rules » methods role, methods results, methods tables
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, array sharing
array fermi » array forming, array format

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "estimation detecting methods rules ((((array string) OR (array fermi))) OR (array arcing))~".
• Adding a wildcard symbol may retrieve word variants: estimation detecting methods rules ((((array string) OR (array fermi))) OR (array arcing))*.