Perhaps you should try some spelling variations:
"and computational using cognitive problem" » "and computation using cognitive problem" (Expand search), "and computations using cognitive problem" (Expand search), "and computacional usinas cognitive problem" (Expand search), "_ computational using cognitive problem" (Expand search), "and computational using cognitive problems" (Expand search), "and computational using cognitive profiles" (Expand search), "and computational using cognitive troubles" (Expand search)
"using modeling vpython python programming" » "using modeling method python programming" (Expand search), "using model vpython python programming" (Expand search), "using modern vpython python programming" (Expand search), "using models vpython python programming" (Expand search), "using modeling python python programming" (Expand search), "using modeling pythons python programming" (Expand search), "using modeling piton 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 using cognitive problem\") OR (\"using modeling vpython python programming\"))~".
• Removing quotes may allow a broader search: (( and computational using cognitive problem ) OR ( using modeling vpython python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational using cognitive problem") OR ("using modeling vpython python programming"))*.