Perhaps you should try some spelling variations:
optimisation microarray » activation microarray, identification microarray, hybridization microarray
program optimisation » program optimization, program optimizations, program reoptimization
microarray https » microarrays https, microarray chips, microscopy https
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 optimisation microarray https~.
• Adding a wildcard symbol may retrieve word variants: integer java program optimisation microarray https*.