Perhaps you should try some spelling variations:
"coder implementation and coding problems" » "code implementation and coding problems" (Expand search), "decoder implementation and coding problems" (Expand search), "model implementation and coding problems" (Expand search), "coder implementation of coding problems" (Expand search), "coder implementation and loading problems" (Expand search), "coder implementation and counting problems" (Expand search), "coder implementation and covering problems" (Expand search), "coder implementation and coping problems" (Expand search), "coder implementation and cooling problems" (Expand search), "coder implementation and cooking problems" (Expand search)
"python based python python programming" » "python based pythons python programming" (Expand search), "python based piton python programming" (Expand search), "python based pitons python programming" (Expand search), "action based python python programming" (Expand search), "python based path python programming" (Expand search), "python gate python python programming" (Expand search), "python and 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 and coding problems\") OR (\"python based python python programming\"))~".
• Removing quotes may allow a broader search: (( coder implementation and coding problems ) OR ( python based python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder implementation and coding problems") OR ("python based python python programming"))*.