Perhaps you should try some spelling variations:
"and computational using locking problem" » "and computation using locking problem" (Expand search), "and computations using locking problem" (Expand search), "and computacional usinas locking problem" (Expand search), "_ computational using locking problem" (Expand search), "and computational using docking problem" (Expand search), "and computational using packing problem" (Expand search), "and computational using loading problem" (Expand search), "and computational using stacking problem" (Expand search), "and computational using tracking problem" (Expand search), "and computational swing blocking problem" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python 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: "((\"and computational using locking problem\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( and computational using locking problem ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational using locking problem") OR ("using python python python programming"))*.