Perhaps you should try some spelling variations:
"using computational and computer program" » "and computational and computer program" (Expand search), "using computational fluid computer program" (Expand search), "using computational _ computer program" (Expand search)
"using coding codigo python programming" » "using codigo codigo python programming" (Expand search), "using code codigo python programming" (Expand search), "using coping codigo python programming" (Expand search), "using coating codigo python programming" (Expand search), "using cooking codigo 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 and computer program\") OR (\"using coding codigo python programming\"))~".
• Removing quotes may allow a broader search: (( using computational and computer program ) OR ( using coding codigo python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational and computer program") OR ("using coding codigo python programming"))*.