Perhaps you should try some spelling variations:
interactions integer » interactions inter, interactions integrins, interactions index
programs functional » programming functional, proteins functional, processes functional
functional microrna » functional microbial, functional micro
integer programs » integer programming, linear programs
microrna https » microrna snps, microarrays https, microrna shuttle

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• Performing a fuzzy search may retrieve terms with similar spellings: interactions integer programs functional microrna https~.
• Adding a wildcard symbol may retrieve word variants: interactions integer programs functional microrna https*.