Perhaps you should try some spelling variations:
"and computational using visual programming" » "and computation using visual programming" (Expand search), "and computations using visual programming" (Expand search), "and computacional usinas visual programming" (Expand search), "and computational using fetal programming" (Expand search), "_ computational using visual programming" (Expand search), "and computational using virtual programming" (Expand search)
"using mobile python python programming" » "using mobile phone python programming" (Expand search), "using mobile pythons python programming" (Expand search), "using mobile piton python programming" (Expand search), "using mobile pitons 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: (("and computational using visual programming") OR ("using mobile python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computational using visual programming\") OR (\"using mobile python python programming\"))".
• Removing quotes may allow a broader search: (( and computational using visual programming ) OR ( using mobile python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and computational using visual programming") OR ("using mobile python python programming"))*.