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