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