Perhaps you should try some spelling variations:
intersection extension » intersection dimension, intersection expressions, intersection extraction
extension programme » extension programmes
https microarray » data microarray, cells microarray, chip microarray
microarray https » microarrays https, microarray chips, microscopy https
programme https » programs https, programme helps, programme arts

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

• Performing a fuzzy search may retrieve terms with similar spellings: intersection extension programme https microarray https~.
• Adding a wildcard symbol may retrieve word variants: intersection extension programme https microarray https*.