Perhaps you should try some spelling variations:
"coder decoder rule coverage problems" » "coder decoder rule coverage problem" (Expand search), "coder decoder rule covering problems" (Expand search), "coder decoder rule covering problem" (Expand search), "encoder decoder rule coverage problems" (Expand search), "coder decoder tube coverage problems" (Expand search), "coder decoder double coverage problems" (Expand search), "coder decoder the coverage problems" (Expand search), "coder code rule coverage problems" (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), "manim 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 rule coverage problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder rule coverage problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder rule coverage problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder rule coverage problems") OR ("api python python python programming"))*.