Perhaps you should try some spelling variations:
"coder implementation and taching problem" » "code implementation and taching problem" (Expand search), "decoder implementation and taching problem" (Expand search), "model implementation and taching problem" (Expand search), "coder implementation of taching problem" (Expand search), "coder implementation and teaching problem" (Expand search), "coder implementation and teaching problems" (Expand search), "coder implementation and matching problem" (Expand search), "coder implementation and caching problem" (Expand search), "coder implementation and teachings problem" (Expand search)
"python coding python python programming" » "action coding python python programming" (Expand search), "python code python python programming" (Expand search), "python codigo python python programming" (Expand search), "python codigos python python programming" (Expand search), "python using python python programming" (Expand search), "python coding pythons python programming" (Expand search), "python coding piton python programming" (Expand search), "python coding pitons 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 implementation and taching problem\") OR (\"python coding python python programming\"))~".
• Removing quotes may allow a broader search: (( coder implementation and taching problem ) OR ( python coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder implementation and taching problem") OR ("python coding python python programming"))*.