Perhaps you should try some spelling variations:
"developing _ decoding variable problem" » "developing _ during variable problem" (Expand search), "developing _ bedding variables problem" (Expand search), "developing _ allowing variable problem" (Expand search), "developing _ decoding variable probit" (Expand search), "developing _ decoding variable power" (Expand search), "developing _ decoding variable prices" (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: (("developing _ decoding variable problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"developing _ decoding variable problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( developing _ decoding variable problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("developing _ decoding variable problem") OR ("using coding python python programming"))*.