Perhaps you should try some spelling variations:
"coder decoder in string problems" » "coder decoder in string problem" (Expand search), "coder decoder in sharing problems" (Expand search), "coder decoder in sorting problems" (Expand search), "encoder decoder in string problems" (Expand search), "coder recorder in string problems" (Expand search), "coder decoder _ string problems" (Expand search), "coder decoder using string 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 in string problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder in string problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder in string problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder in string problems") OR ("api python python python programming"))*.