Perhaps you should try some spelling variations:
"coder simulation using c program" » "code simulation using c program" (Expand search), "model simulation using c program" (Expand search), "power simulation using c program" (Expand search), "coder simulation using c programs" (Expand search), "coder simulation using abc program" (Expand search), "coder simulation using cfd program" (Expand search)
"using cfdoding python python programming" » "using coding python python programming" (Expand search), "using cooking python python programming" (Expand search), "using coping python python programming" (Expand search), "using cfdoding pythons python programming" (Expand search), "using cfdoding piton python programming" (Expand search), "using cfdoding pitons python programming" (Expand search), "using cfdfdoding 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: "((\"coder simulation using c program\") OR (\"using cfdoding python python programming\"))~".
• Removing quotes may allow a broader search: (( coder simulation using c program ) OR ( using cfdoding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder simulation using c program") OR ("using cfdoding python python programming"))*.