Perhaps you should try some spelling variations:
integration concurrent » integration concurrency, integration current, integration concept
concurrent problem » concurrent program, concurrent prolog, current problem
chapter microarray » cancer microarray, cluster microarrays, clusters microarray
microarray https » microarrays https, microarray chips, microscopy https
problem chapter » problems chapter

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• Performing a fuzzy search may retrieve terms with similar spellings: integration concurrent problem chapter microarray https~.
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