Perhaps you should try some spelling variations:
"teaching computation using linear programming" » "teaching computational using linear programming" (Expand search), "teaching competitions using linear programming" (Expand search), "teaching compensation using linear programming" (Expand search), "teaching computations using linear programming" (Expand search), "teaching computation in linear programming" (Expand search), "teaching composition using linear programming" (Expand search)
"using opencv python python programming" » "using opencv pythons python programming" (Expand search), "using opencv piton python programming" (Expand search), "using opencv pitons python programming" (Expand search), "using opencl python python programming" (Expand search), "using open python python programming" (Expand search), "usando opencv 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: "((\"teaching computation using linear programming\") OR (\"using opencv python python programming\"))~".
• Removing quotes may allow a broader search: (( teaching computation using linear programming ) OR ( using opencv python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("teaching computation using linear programming") OR ("using opencv python python programming"))*.