Perhaps you should try some spelling variations:
"whose computation and dirac problem" » "pose computation and dirac problem" (Expand search), "these computations and dirac problem" (Expand search), "the computation and dirac problem" (Expand search), "whose computational and dirac problem" (Expand search), "whose computation of dirac problem" (Expand search), "whose computation and direct 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"whose computation and dirac problem\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( whose computation and dirac problem ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("whose computation and dirac problem") OR ("using coding python python programming"))*.