Perhaps you should try some spelling variations:
integer formulation » integral formulation, integral formulations, integer permutations
formulation program » simulation program, population program, formulation problem
serving microarray » sorting microarray, sensing microarrays, series microarray
microarray https » microarrays https, microarray chips, microscopy https
program serving » programs serving, program setting, programs deriving

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• Adding a wildcard symbol may retrieve word variants: integer formulation program serving microarray https*.