Perhaps you should try some spelling variations:
respiration programs » restoration programs, respiration programmed, preparation programs
integer respiration » internal respiration, insect respiration
https microarray » data microarray, cells microarray, chip microarray
microarray chip » microarray cgh, microarrays case, microarrays cell

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

• Adding a wildcard symbol may retrieve word variants: integer respiration programs https microarray chip*.