Perhaps you should try some spelling variations:
introduction discretization » reduction discretization, introduction description, introduction distribution
array forming » array format, array arcing, array formats
methods role » methods rules, methods remote, methods robert
array fermi » 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: introduction discretization methods role ((((array forming) or (array fermi))) or (array using))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: introduction discretization methods role ((((array forming) OR (array fermi))) OR (array using)).
• Adding a wildcard symbol may retrieve word variants: introduction discretization methods role ((((array forming) or (array fermi))) or (array using))*.