Perhaps you should try some spelling variations:
"coder implementation challenge _ programmer" » "coder implementation challenges _ programmer" (Expand search), "coder implementations challenges _ programmer" (Expand search), "coder segmentation challenge _ programmer" (Expand search), "code implementation challenge _ programmer" (Expand search), "decoder implementation challenge _ programmer" (Expand search), "model implementation challenge _ programmer" (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 implementation challenge _ programmer") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder implementation challenge _ programmer\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder implementation challenge _ programmer ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder implementation challenge _ programmer") OR ("api python python python programming"))*.