Perhaps you should try some spelling variations:
introduction current » introduction case
exploring microarray » exploratory microarray, exploring microsoft, analyzing microarray
progress exploring » progress exploiting, process exploring, programs exploring
current progress » current problems, recent progress
microarray https » microarrays https, microarray chips, microscopy https

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: introduction current progress exploring microarray https~.
• Adding a wildcard symbol may retrieve word variants: introduction current progress exploring microarray https*.