Perhaps you should try some spelling variations:
"by computational model using problem" » "by computational modeling using problem" (Expand search), "_ computational model using problem" (Expand search), "and computational model using problem" (Expand search), "by computational model housing problems" (Expand search), "by computational model routing problem" (Expand search), "by computational model cutting problem" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python 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: "((\"by computational model using problem\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( by computational model using problem ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computational model using problem") OR ("using coding python python programming"))*.