Perhaps you should try some spelling variations:
functionaries function » functionals function, functions function, function dysfunction
problem functionaries » problem functionals, problems dictionaries, problem functional
function https » functions https, fiction https
parallel test » parallel text, parallel texts, parallel task
test problem » test problems, tests problems, set problem

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

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