Perhaps you should try some spelling variations:
"coder pid controllers using process" » "coder pid controller tuning process" (Expand search), "coder pid control using process" (Expand search), "coder pid controllers with process" (Expand search), "coder pid controllers nursing process" (Expand search), "coder pid controllers buying process" (Expand search), "coder pid controllers curing process" (Expand search), "order pid controllers using process" (Expand search), "encoders pid controllers using process" (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder pid controllers using process\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder pid controllers using process ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder pid controllers using process") OR ("api python python python programming"))*.