Perhaps you should try some spelling variations:
"coder coder complexity teaching problem" » "coder coder complexity thinking problem" (Expand search), "coder coder complementary teaching problem" (Expand search), "coder code complexity teaching problem" (Expand search), "coder model complexity teaching problem" (Expand search), "coder lower complexity teaching problem" (Expand search), "coder coder complexity teaching program" (Expand search), "coder coder complexity teaching profile" (Expand search), "coder coder complexity teaching programs" (Expand search), "coder decoder complexity teaching problem" (Expand search), "code code complexity teaching problem" (Expand search), "decoder codec complexity teaching 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 teaching problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder complexity teaching problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder complexity teaching problem") OR ("api python python python programming"))*.