Perhaps you should try some spelling variations:
"teaching computation using routing problems" » "teaching computational using routing problems" (Expand search), "teaching competitions using routing problems" (Expand search), "teaching compensation using routing problems" (Expand search), "teaching computations using routing problems" (Expand search), "teaching computation in routing problems" (Expand search), "teaching composition using routing problems" (Expand search), "teaching computation using routing problem" (Expand search), "teaching computation using solving problems" (Expand search), "teaching computation using packing problems" (Expand search), "teaching computation using routine problems" (Expand search), "teaching computation nursing routing problems" (Expand search), "teaching computation using rotating problems" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("teaching computation using routing problems") OR ("using codigo python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"teaching computation using routing problems\") OR (\"using codigo python python programming\"))".
• Removing quotes may allow a broader search: (( teaching computation using routing problems ) OR ( using codigo python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("teaching computation using routing problems") OR ("using codigo python python programming"))*.