Perhaps you should try some spelling variations:
strong perfusion » stroke perfusion, uterine perfusion, lung perfusion
modeling strong » modeling long, modeling strain, modeling strategy
array profiling » array processing, microarray profiling
array string » array strong, arrays strings, array sharing
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: information modeling strong perfusion ((((array profiling) or (array string))) or (array using))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information modeling strong perfusion ((((array profiling) OR (array string))) OR (array using)).
• Adding a wildcard symbol may retrieve word variants: information modeling strong perfusion ((((array profiling) or (array string))) or (array using))*.