Perhaps you should try some spelling variations:
function microarray » function microarrays, functional microarray, function micrornas
programs function » programs functional, programme function, programs fiction
reference method » difference method, difference methods
microarray chips » microarray chip, microarrays chip, microarray cross
method programs » methods program, method progress, method programmed

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

• Performing a fuzzy search may retrieve terms with similar spellings: reference method programs function microarray chips~.
• Adding a wildcard symbol may retrieve word variants: reference method programs function microarray chips*.