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