Perhaps you should try some spelling variations:
structured microarray » structure microarray, directed microarray
structures microarray » structure microarray, studies microarray, structures array
program interface » program interfaces, programs interfaces, problem interface
interface problem » interface problems, interlude problems, interference problems

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

• Performing a fuzzy search may retrieve terms with similar spellings: program interface problem ((structures microarray) OR (structured microarray)) chips~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "program interface problem ((structures microarray) OR (structured microarray)) chips".
• Adding a wildcard symbol may retrieve word variants: program interface problem ((structures microarray) OR (structured microarray)) chips*.