Perhaps you should try some spelling variations:
computational constraints » compositional constraints, computations constrained, operational constraints
functions computational » functions computation, function computation, directions computational
constraints programing » constraints programming, constraint programing, constraint programming
microarray profiling » microrna 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: functions computational constraints programing ((array string) OR (microarray profiling))~.
• Adding a wildcard symbol may retrieve word variants: functions computational constraints programing ((array string) or (microarray profiling))*.