Perhaps you should try some spelling variations:
"coder coding _ matlab protocol" » "coder coding _ lab protocol" (Expand search), "coder coding _ material protocol" (Expand search), "modern coding _ matlab protocol" (Expand search), "color coding _ matlab protocol" (Expand search), "odor coding _ matlab 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding _ matlab protocol\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coding _ matlab protocol ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coding _ matlab protocol") OR ("api python python python programming"))*.