Perhaps you should try some spelling variations:
"coder decoder robot coverage problem" » "coder decoder robot covering problem" (Expand search), "coder decoder robot cover problem" (Expand search), "coder decoder robot covering problems" (Expand search), "coder decoder root coverage problem" (Expand search), "encoder decoder robot coverage problem" (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 decoder robot coverage problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder decoder robot coverage problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder decoder robot coverage problem") OR ("api python python python programming"))*.