Perhaps you should try some spelling variations:
authorization authentication » information authentication
testing multidimensional » detecting multidimensional, using multidimensional, fitting multidimensional
authentication testing » authentication cheating, authentication using, authentication tests
array profiling » array processing, microarray profiling
array string » array strong, arrays strings, array sharing

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

• If you are trying to use Boolean operators, they must be ALL CAPS: authorization authentication testing multidimensional ((array string) OR (array profiling))~.
• Adding a wildcard symbol may retrieve word variants: authorization authentication testing multidimensional ((array string) or (array profiling))*.