Perhaps you should try some spelling variations:
sample programming » simple programming, example programming, game programming
apple programming » applied programming, example programming, simple programming
basic microarray » based microarray, bac microarray, based microarrays
microarray chips » microarray chip, microarrays chip, microarray cross

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

• Performing a fuzzy search may retrieve terms with similar spellings: interactive ((sample programming) OR (apple programming)) basic microarray chips~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "interactive ((sample programming) OR (apple programming)) basic microarray chips".
• Adding a wildcard symbol may retrieve word variants: interactive ((sample programming) OR (apple programming)) basic microarray chips*.