Perhaps you should try some spelling variations:
"coder allocation using ranking problem" » "power allocation using ranking problem" (Expand search), "order allocation using ranking problem" (Expand search), "over allocation using ranking problem" (Expand search), "coder application using ranking problem" (Expand search), "coder allocation in ranking problem" (Expand search), "coder allocation and ranking problem" (Expand search), "coder allocation using packing problem" (Expand search), "coder allocation using making problem" (Expand search), "coder allocation using landing problem" (Expand search), "coder allocation using stacking problem" (Expand search), "coder allocation using resting 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: (("coder allocation using ranking problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder allocation using ranking problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( coder allocation using ranking problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder allocation using ranking problem") OR ("using coding python python programming"))*.