Perhaps you should try some spelling variations:
programming optimisation » programming optimization, program optimisation, programming application
optimisation problem » optimisation problems, optimization problem, optimization problems
function microarray » function microarrays, functional microarray, function micrornas
problem function » problems function, problems functions, problem functional
microarray chip » microarray cgh, microarrays case, microarrays cell

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• Performing a fuzzy search may retrieve terms with similar spellings: programming optimisation problem function microarray chip~.
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