Perhaps you should try some spelling variations:
intersections python » intersections without, intersection method, intersections non
python programmed » python programming, method programmed, python program
programmed using » programme using, programmes using, programmers using
using microarray » using microarrays, dna microarray, cdna microarray
microarray https » microarrays https, microarray chips, microscopy https

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• Adding a wildcard symbol may retrieve word variants: intersections python programmed using microarray https*.