Perhaps you should try some spelling variations:
"coder coding _ parallel problem" » "coder coding _ parallel prolog" (Expand search), "coder coding _ parallel program" (Expand search), "coder coding _ parallel propeller" (Expand search), "modern coding _ parallel problem" (Expand search), "color coding _ parallel problem" (Expand search), "odor coding _ parallel problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coding _ parallel problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding _ parallel problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding _ parallel problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding _ parallel problem") OR ("api python python python programming"))*.