Perhaps you should try some spelling variations:
"code code decoding routing protocol" » "code code sectoring routing protocol" (Expand search), "code code decoding reading protocol" (Expand search), "code code decoding using protocol" (Expand search), "code code decoding routing protocols" (Expand search), "code code decoding training protocol" (Expand search), "code barcode decoding routing protocol" (Expand search), "code coding decoding routing protocol" (Expand search), "code code according routing protocol" (Expand search), "code cdc decoding routing protocol" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ 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: (("code code decoding routing protocol") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"code code decoding routing protocol\") OR (\"_ python python python programming\"))*".
• Removing quotes may allow a broader search: (( code code decoding routing protocol ) OR ( _ python python python programming ))*.