Perhaps you should try some spelling variations:
"using computational using allocation problem" » "and computational using allocation problem" (Expand search), "using computation using allocation problem" (Expand search), "using computations using allocation problem" (Expand search), "using computacional usinas allocation problem" (Expand search), "using computational using location problem" (Expand search), "using computational using association problem" (Expand search), "using computational single allocation problem" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium python 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: "((\"using computational using allocation problem\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( using computational using allocation problem ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational using allocation problem") OR ("using codigo python python programming"))*.