Perhaps you should try some spelling variations:
"using computation by variable problem" » "using computational by variable problem" (Expand search), "using imputation by variable problem" (Expand search), "using compilation by variable problem" (Expand search), "using computation by variable probit" (Expand search), "using computation by variable power" (Expand search), "using computation by variable prices" (Expand search), "using computation of variable problem" (Expand search), "using computation _ variable problem" (Expand search), "using computation in variable problem" (Expand search), "using computation at variable problem" (Expand search), "using computation y variables problem" (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: (("using computation by variable problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computation by variable problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( using computation by variable problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computation by variable problem") OR ("using coding python python programming"))*.