Perhaps you should try some spelling variations:
function optimization » simulation optimization
optimization program » optimization problem, optimization problems, optimization proximal
making microarray » making microarrays, mining microarray, using microarray
microarray chips » microarray chip, microarrays chip, microarray cross
program making » programs making, programme making, program trading

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

• Performing a fuzzy search may retrieve terms with similar spellings: function optimization program making microarray chips~.
• Adding a wildcard symbol may retrieve word variants: function optimization program making microarray chips*.