Perhaps you should try some spelling variations:
"coder coder pid controllers using" » "coder coder pid controller tuning" (Expand search), "coder coder pid control using" (Expand search), "coder coder pid controllers with" (Expand search), "coder decoder pid controllers using" (Expand search), "code code pid controllers using" (Expand search), "decoder codec pid controllers using" (Expand search), "coder order pid controllers using" (Expand search), "coder encoders pid controllers using" (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 coder pid controllers using") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder pid controllers using\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder pid controllers using ) OR ( api python python python programming ))*.