Perhaps you should try some spelling variations:
functional microarray » function microarrays, functional microrna, functional microbial
function microarray » function microarrays, function micrornas, selection microarray
program integer » program inverter, problem integer, programming integer
integer program » integer programs, integer programming

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

• Performing a fuzzy search may retrieve terms with similar spellings: program integer program ((function microarray) OR (functional microarray)) chips~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "program integer program ((function microarray) OR (functional microarray)) chips".
• Adding a wildcard symbol may retrieve word variants: program integer program ((function microarray) OR (functional microarray)) chips*.