Perhaps you should try some spelling variations:
detection detection » reaction detection, mutation detection
detection methods » detection method, extraction methods, collection methods
methods role » methods rules, methods remote, methods robert
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: detection detection methods role ((((array string) or (array format))) or (array arcing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: detection detection methods role ((((array string) OR (array format))) OR (array arcing)).
• Adding a wildcard symbol may retrieve word variants: detection detection methods role ((((array string) or (array format))) or (array arcing))*.