Perhaps you should try some spelling variations:
"coder implementation in string problem" » "code implementation in string problem" (Expand search), "decoder implementation in string problem" (Expand search), "model implementation in string problem" (Expand search), "coder implementation and string problem" (Expand search), "coder implementation of string problem" (Expand search), "coder implementation in sizing problem" (Expand search), "coder implementation in rostering problem" (Expand search), "coder implementation in sharing problems" (Expand search)
"python coding in python programming" » "action coding in python programming" (Expand search), "python code in python programming" (Expand search), "python coding rna python programming" (Expand search), "python coding and python programming" (Expand search), "python coding _ 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 string problem\") OR (\"python coding in python programming\"))~".
• Removing quotes may allow a broader search: (( coder implementation in string problem ) OR ( python coding in python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder implementation in string problem") OR ("python coding in python programming"))*.