Perhaps you should try some spelling variations:
preprocessing functionaries » processing dictionaries, processing functionality
databases preprocessing » database processing, data preprocessing, based preprocessing
functionaries function » functionals function, functions function, function dysfunction
parallel databases » parallel database
function https » functions https, fiction https

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

• Performing a fuzzy search may retrieve terms with similar spellings: parallel databases preprocessing functionaries function https~.
• Adding a wildcard symbol may retrieve word variants: parallel databases preprocessing functionaries function https*.