Perhaps you should try some spelling variations:
"coder decoder mapping path problem" » "coder cover mapping path problem" (Expand search), "coder code mapping path problem" (Expand search), "coder decoders hamming path problem" (Expand search), "encoder decoder mapping path problem" (Expand search), "coder decoder mapping paths problem" (Expand search), "coder decoder mapping patos problem" (Expand search), "coder decoder mapping at problem" (Expand search), "coder decoder mapping health problem" (Expand search), "coder decoder mapping and 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), "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 mapping path problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder mapping path problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder mapping path problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder mapping path problem") OR ("api python python python programming"))*.