Perhaps you should try some spelling variations:
intersections python » intersections without, intersection method, intersections non
sample microarray » samples microarray, simple microarray, applied microarray
microarray chips » microarray chip, microarrays chip, microarray cross
python program » python programs, action program, python programming
program sample » programs simple, program examples, program style

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

• Adding a wildcard symbol may retrieve word variants: intersections python program sample microarray chips*.