Perhaps you should try some spelling variations:
"coder coder decoder routing protocol" » "coder coder decoder routing protocols" (Expand search), "coder coder decoder training protocol" (Expand search), "coder coder decoder using protocol" (Expand search), "coder encoder decoder routing protocol" (Expand search), "code code decoder routing protocol" (Expand search), "decoder codec decoder routing protocol" (Expand search), "codesc poder decoder routing protocol" (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), "rpa python 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 decoder routing protocol") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder decoder routing protocol\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder decoder routing protocol ) OR ( api python python python programming ))*.