Perhaps you should try some spelling variations:
"coder implementation based packing problem" » "code implementation based packing problem" (Expand search), "decoder implementation based packing problem" (Expand search), "model implementation based packing problem" (Expand search), "coder implementation and packing problem" (Expand search), "coder implementation issues packing problem" (Expand search), "coder implementation at packing problem" (Expand search), "coder implementation based parking problem" (Expand search), "coder implementation based packaging problem" (Expand search), "coder implementation based tracking problem" (Expand search)
"python using python python programming" » "python using pythons python programming" (Expand search), "python using piton python programming" (Expand search), "python using pitons python programming" (Expand search), "python usando python python programming" (Expand search), "python coding python python programming" (Expand search), "action using python python programming" (Expand search), "python in 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 implementation based packing problem\") OR (\"python using python python programming\"))~".
• Removing quotes may allow a broader search: (( coder implementation based packing problem ) OR ( python using python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder implementation based packing problem") OR ("python using python python programming"))*.