Perhaps you should try some spelling variations:
formulation problems » formulation problem, formation problems, population problems
program formulation » programme formulation, problem formulation, programming formulation
microarray chips » microarray chip, microarrays chip, microarray cross
code microarray » wide microarray, course microarray, color microarray
problems code » problems node, problems model, problems case

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

• Performing a fuzzy search may retrieve terms with similar spellings: program formulation problems code microarray chips~.
• Adding a wildcard symbol may retrieve word variants: program formulation problems code microarray chips*.