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