Perhaps you should try some spelling variations:
estimation determination » estimators determination, titration determination, validation determination
determination methods » examination methods, detection methods
array string » array strong, arrays strings, array sharing
array fermi » array forming, array format
array using » arrays using

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 methods results ((((array string) or (array fermi))) or (array using))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: estimation determination methods results ((((array string) OR (array fermi))) OR (array using)).
• Adding a wildcard symbol may retrieve word variants: estimation determination methods results ((((array string) or (array fermi))) or (array using))*.