Perhaps you should try some spelling variations:
functional microarray » function microarrays, functional microrna, functional microbial
interactions integer » interactions inter, interactions integrins, interactions index
function microarray » function microarrays, function micrornas, selection microarray
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: interactions integer program ((function microarray) OR (functional microarray)) chips~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "interactions integer program ((function microarray) OR (functional microarray)) chips".
• Adding a wildcard symbol may retrieve word variants: interactions integer program ((function microarray) OR (functional microarray)) chips*.