Perhaps you should try some spelling variations:
"coder coder perna c programming" » "coder coder perna _ programming" (Expand search), "coder coder perna cone programming" (Expand search), "coder coder perna and programming" (Expand search), "coder decoder perna c programming" (Expand search), "code code perna c programming" (Expand search), "decoder codec perna c programming" (Expand search), "coder coder perna l programming" (Expand search), "coder coder perna i programming" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder perna c programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder perna c programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder perna c programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder perna c programming") OR ("api python python python programming"))*.