Perhaps you should try some spelling variations:
"coder coder system teaching problems" » "coder coder system teaching problem" (Expand search), "coder coder system teaching process" (Expand search), "coder coder system packing problems" (Expand search), "coder cover system teaching problems" (Expand search), "coder code system teaching problems" (Expand search), "coder coded systems teaching problems" (Expand search), "coder decoder system teaching problems" (Expand search), "code code system teaching problems" (Expand search), "decoder codec system teaching 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.

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