Perhaps you should try some spelling variations:
formation principles » information principles, formulation principles, information principle
principles practices » principles practice
practices decision » practice decision, practical decision, practical decisions
array string » array strong, arrays strings, array sharing
array fermi » array forming

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: formation principles practices decision ((((array string) or (array fermi))) or (array format))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: formation principles practices decision ((((array string) OR (array fermi))) OR (array format)).
• Adding a wildcard symbol may retrieve word variants: formation principles practices decision ((((array string) or (array fermi))) or (array format))*.