Perhaps you should try some spelling variations:
estimation determination » estimators determination, titration determination, validation determination
determination methods » examination methods, detection methods
array forming » array format, array fermi, array formats
array string » array strong, arrays strings, array sharing
array arcing » array probing, array sharing, array 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 tools ((((array string) or (array forming))) or (array arcing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: estimation determination methods tools ((((array string) OR (array forming))) OR (array arcing)).
• Adding a wildcard symbol may retrieve word variants: estimation determination methods tools ((((array string) or (array forming))) or (array arcing))*.