Perhaps you should try some spelling variations:
"coder decoder using routing problems" » "coder decoder using routing problem" (Expand search), "coder decoder using solving problems" (Expand search), "coder decoder using packing problems" (Expand search), "encoder decoder using routing problems" (Expand search), "coder disorder using routing problems" (Expand search), "coder decoding using routing problems" (Expand search), "coder cover using routing problems" (Expand search), "coder decoder using routine problems" (Expand search), "coder decoder nursing routing problems" (Expand search), "coder decoder using rotating 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)

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 using routing problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder using routing problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder using routing problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder using routing problems") OR ("api python python python programming"))*.