Perhaps you should try some spelling variations:
formulation programmes » population programmes, population programme, correlation programme
integer formulation » integral formulation, integral formulations, integer permutations
programmes using » programme using, programs using, programming using
using microarray » using microarrays, dna microarray, cdna microarray
microarray chips » microarray chip, microarrays chip, microarray cross

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• Performing a fuzzy search may retrieve terms with similar spellings: integer formulation programmes using microarray chips~.
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