Perhaps you should try some spelling variations:
"coder _ complexity method problem" » "coder _ complex method problem" (Expand search), "coder _ complexes method problem" (Expand search), "coder _ completion method problem" (Expand search), "coder _ complexity method problems" (Expand search), "coder _ complexity methods problem" (Expand search), "coder _ complexity method problemas" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python 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 _ complexity method problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder _ complexity method problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( coder _ complexity method problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder _ complexity method problem") OR ("using coding python python programming"))*.