Perhaps you should try some spelling variations:
"modeling optimization python computer program" » "model optimization python computer program" (Expand search), "routing optimization python computer program" (Expand search), "scheduling optimization python computer program" (Expand search), "modeling optimization method computer program" (Expand search), "modeling optimization option computer program" (Expand search), "modeling optimization methods computer program" (Expand search)
"using in python python programming" » "using in pythons python programming" (Expand search), "using in piton python programming" (Expand search), "using in pitons python programming" (Expand search), "using _ 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: "((\"modeling optimization python computer program\") OR (\"using in python python programming\"))~".
• Removing quotes may allow a broader search: (( modeling optimization python computer program ) OR ( using in python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("modeling optimization python computer program") OR ("using in python python programming"))*.