Perhaps you should try some spelling variations:
"by computation using locking problem" » "by computations using locking problem" (Expand search), "by computation in locking problem" (Expand search), "by composition using locking problem" (Expand search), "by computation using docking problem" (Expand search), "by computation using packing problem" (Expand search), "by computation using loading problem" (Expand search), "by computational using locking problem" (Expand search), "of computation using locking problem" (Expand search), "_ computation using locking problem" (Expand search), "by computation using stacking problem" (Expand search), "by computation swing blocking problem" (Expand search), "by computation using tracking 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: (("by computation using locking problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by computation using locking problem\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( by computation using locking problem ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("by computation using locking problem") OR ("using coding python python programming"))*.