Perhaps you should try some spelling variations:
"and computations using computer program" » "and computation using computer program" (Expand search), "and populations using computer program" (Expand search), "and computations in computer program" (Expand search), "and computational using computer program" (Expand search), "and competitions using computer program" (Expand search)
"using mobile from python programming" » "using mobilis from python programming" (Expand search), "using mobile food python programming" (Expand search), "using mobile fog python programming" (Expand search), "using mobile from pathogen programming" (Expand search), "using mobile from anthony 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 computations using computer program\") OR (\"using mobile from python programming\"))~".
• Removing quotes may allow a broader search: (( and computations using computer program ) OR ( using mobile from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computations using computer program") OR ("using mobile from python programming"))*.