Perhaps you should try some spelling variations:
simple microarray » sample microarray, samples microarray, size microarray
microarray https » microarrays https, microarray chips, microscopy https
program simple » programs simple, program sample, program simone
integer java » integer data, integer base, integer dea
java program » java programs, a program, java programming

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

• Performing a fuzzy search may retrieve terms with similar spellings: integer java program simple microarray https~.
• Adding a wildcard symbol may retrieve word variants: integer java program simple microarray https*.