Perhaps you should try some spelling variations:
"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)
"coder coding qos routing problem" » "modern coding qos routing problem" (Expand search), "color coding qos routing problem" (Expand search), "odor coding qos routing problem" (Expand search), "coder coding of routing problem" (Expand search), "coder coding to routing problem" (Expand search), "coder coding co routing problem" (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 coding qos routing problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding qos routing problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding qos routing problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding qos routing problem") OR ("api python python python programming"))*.