Perhaps you should try some spelling variations:
"using computational 3d computer program" » "and computational 3d computer program" (Expand search), "using computacional 3d computer program" (Expand search), "using computational and computer program" (Expand search), "using computational _ computer program" (Expand search), "using computational 3 computer program" (Expand search), "using computational 3d computed program" (Expand search)
"using coding opencv python programming" » "using using opencv python programming" (Expand search), "using codigo opencl python programming" (Expand search), "using coding pnc python programming" (Expand search), "using coping opencv python programming" (Expand search), "using coating opencv python programming" (Expand search), "using cooking opencv 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: "((\"using computational 3d computer program\") OR (\"using coding opencv python programming\"))~".
• Removing quotes may allow a broader search: (( using computational 3d computer program ) OR ( using coding opencv python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational 3d computer program") OR ("using coding opencv python programming"))*.