Perhaps you should try some spelling variations:
"coder coder complexity sahel problem" » "coder code complexity sahel problem" (Expand search), "coder model complexity sahel problem" (Expand search), "coder lower complexity sahel problem" (Expand search), "coder coder complexity scales problem" (Expand search), "coder coder complexity school problem" (Expand search), "coder coder complexity based problem" (Expand search), "coder coder complexity label problem" (Expand search), "coder coder complexity sail problem" (Expand search), "coder decoder complexity sahel problem" (Expand search), "code code complexity sahel problem" (Expand search), "decoder codec complexity sahel 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)

You may be able to get more results by adjusting your search query.

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