Perhaps you should try some spelling variations:
computing microarray » comparing microarray, conducting microarray, sorting microarray
reference problems » references problems, preference problems, inference problems
program reference » program references, programs references, programs preference
microarray chip » microarray cgh, microarrays case, microarrays cell

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

• Performing a fuzzy search may retrieve terms with similar spellings: program reference problems computing microarray chip~.
• Adding a wildcard symbol may retrieve word variants: program reference problems computing microarray chip*.