Perhaps you should try some spelling variations:
conformation changes » conformational changes, information changes, conformational change
spaces extensions » spaces extension, traces extensions, squares extensions
changes spaces » changes pages, changer space, changing spaces
array formats » array format, assay formats, array formulas
array string » array strong, arrays strings, array sharing
array fermi » array forming, array format

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

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