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