Perhaps you should try some spelling variations:
operating function » operations function, operation function, operative function
master microarray » cancer microarray, based microarray, cluster microarrays
function program » functional program, functions programs, functional programs
microarray https » microarrays https, microarray chips, microscopy https
program master » program chapter, program manager, program fast

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

• Performing a fuzzy search may retrieve terms with similar spellings: operating function program master microarray https~.
• Adding a wildcard symbol may retrieve word variants: operating function program master microarray https*.