Perhaps you should try some spelling variations:
"coder implementation and string problem" » "code implementation and string problem" (Expand search), "decoder implementation and string problem" (Expand search), "model implementation and string problem" (Expand search), "coder implementation of string problem" (Expand search), "coder implementation and sizing problem" (Expand search), "coder implementation and rostering problem" (Expand search), "coder implementation and sharing problems" (Expand search), "coder implementation and strong problem" (Expand search), "coder implementation and sharing problem" (Expand search), "coder implementation and staging problem" (Expand search)
"python coding with python programming" » "action coding with python programming" (Expand search), "python code with python programming" (Expand search), "python loading with python programming" (Expand search), "python feeding with python programming" (Expand search), "python reading with python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder implementation and string problem") OR ("python coding with python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder implementation and string problem\") OR (\"python coding with python programming\"))*".
• Removing quotes may allow a broader search: (( coder implementation and string problem ) OR ( python coding with python programming ))*.