Perhaps you should try some spelling variations:
"by computation using computer program" » "by computations using computer program" (Expand search), "by computation in computer program" (Expand search), "by composition using computer program" (Expand search), "by computational using computer program" (Expand search), "of computation using computer program" (Expand search), "_ computation using computer program" (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: (("by computation using computer program") OR ("using mobile python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by computation using computer program\") OR (\"using mobile python python programming\"))".
• Removing quotes may allow a broader search: (( by computation using computer program ) OR ( using mobile python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("by computation using computer program") OR ("using mobile python python programming"))*.