Perhaps you should try some spelling variations:
"code in parallel programming documentation" » "code in parallel program documentation" (Expand search), "code in parallel processing documentation" (Expand search), "code in parallel programming documents" (Expand search), "code _ parallel programming documentation" (Expand search), "code of parallel programming documentation" (Expand search), "code and parallel programming documentation" (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), "manim 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: (("code in parallel programming documentation") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"code in parallel programming documentation\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( code in parallel programming documentation ) OR ( api python python python programming ))*.