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