Perhaps you should try some spelling variations:
certification programme » certification program, certification programs, fertilization programme
programs certification » program certification, programs verification, program verification
function microarray » function microarrays, functional microarray, selection microarray
function micrornas » function microarrays, functional microrna, function microbial

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

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