Perhaps you should try some spelling variations:
"by computations using loading problem" » "by computation using loading problem" (Expand search), "by populations using loading problem" (Expand search), "by computations in loading problem" (Expand search), "by computational using loading problem" (Expand search), "of computations using loading problem" (Expand search), "by computacional using loading problem" (Expand search), "by computations using routing problem" (Expand search), "by computations using planning problem" (Expand search), "by computations using locking problem" (Expand search), "by computations using shading problem" (Expand search), "by computations using coding 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: "((\"by computations using loading problem\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( by computations using loading problem ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computations using loading problem") OR ("using codigo python python programming"))*.