Perhaps you should try some spelling variations:
"developing and using c programming" » "developing an using c programming" (Expand search), "developing _ using c programming" (Expand search), "developing and using _ programming" (Expand search), "developing and using cone programming" (Expand search), "developing and using and programming" (Expand search), "developing and housing c programming" (Expand search), "developing and using cfd programming" (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), "using cfdoding 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: "((\"developing and using c programming\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( developing and using c programming ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("developing and using c programming") OR ("using coding python python programming"))*.