Perhaps you should try some spelling variations:
estimation determination » estimators determination, titration determination, validation determination
determination system » determination based, determination case, deterministic systems
arrays bearing » arrays searching, arrays swarming, arrays imaging
system robust » systems robust
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: estimation determination system robust ((((array string) or (array arcing))) or (arrays bearing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: estimation determination system robust ((((array string) OR (array arcing))) OR (arrays bearing)).
• Adding a wildcard symbol may retrieve word variants: estimation determination system robust ((((array string) or (array arcing))) or (arrays bearing))*.