Perhaps you should try some spelling variations:
"and computational python computer program" » "and computacional python computer program" (Expand search), "and computacional vpython computer program" (Expand search), "and computacionais python computer program" (Expand search), "_ computational python computer program" (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: "((\"and computational python computer program\") OR (\"using opencv python python programming\"))~".
• Removing quotes may allow a broader search: (( and computational python computer program ) OR ( using opencv python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational python computer program") OR ("using opencv python python programming"))*.