Perhaps you should try some spelling variations:
"coder implementation in persistent problem" » "code implementation in persistent problem" (Expand search), "decoder implementation in persistent problem" (Expand search), "model implementation in persistent problem" (Expand search), "coder implementation in persistente problema" (Expand search), "coder implementation in persistence problem" (Expand search), "coder implementation in persisting problem" (Expand search), "coder implementation and persistent problem" (Expand search), "coder implementation of persistent problem" (Expand search), "coder implementation _ persistent 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 in persistent problem\") OR (\"python coding python python programming\"))~".
• Removing quotes may allow a broader search: (( coder implementation in persistent problem ) OR ( python coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder implementation in persistent problem") OR ("python coding python python programming"))*.