Perhaps you should try some spelling variations:
preprocessing diffraction » processing diffraction, reprocessing transaction
method preprocessing » methods preprocessing, network preprocessing, without preprocessing
diffraction java » diffraction data, diffraction fast, diffraction a
programs method » program method, problems method, programming method
https » http

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

• Performing a fuzzy search may retrieve terms with similar spellings: programs method preprocessing diffraction java https~.
• Adding a wildcard symbol may retrieve word variants: programs method preprocessing diffraction java https*.