Perhaps you should try some spelling variations:
formulation programs » simulation programs, population programs, formulation problems
integer formulation » integral formulation, integral formulations, integer permutations
based microarray » based microarrays, cancer microarray, a microarray
microarray https » microarrays https, microarray chips, microscopy https
programs based » programs case, programming based

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• Performing a fuzzy search may retrieve terms with similar spellings: integer formulation programs based microarray https~.
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