Perhaps you should try some spelling variations:
introduction contentious » introduction contentions, introduction continuous, introduction conventional
contentious programming » conventions programming, continuous programming, concepts programming
microarray https » microarrays https, microarray chips, microscopy https
programming bac » programming basic, programming bio, programming bdi
bac microarray » basic microarray, bead microarray, a microarray

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

• Performing a fuzzy search may retrieve terms with similar spellings: introduction contentious programming bac microarray https~.
• Adding a wildcard symbol may retrieve word variants: introduction contentious programming bac microarray https*.