Perhaps you should try some spelling variations:
"coder coder controller planning problem" » "coder coder control planning problem" (Expand search), "coder coder controller tuning problem" (Expand search), "coder coder controlled learning problem" (Expand search), "coder mode controller planning problem" (Expand search), "coder order controller planning problem" (Expand search), "coder power controller planning problem" (Expand search), "coder coder controller planning process" (Expand search), "coder decoder controller planning problem" (Expand search), "code code controller planning problem" (Expand search), "decoder codec controller planning 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 coder controller planning problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder controller planning problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder controller planning problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder controller planning problem") OR ("api python python python programming"))*.