Perhaps you should try some spelling variations:
"coder coder ring theory problem" » "coder coder ring theory problems" (Expand search), "coder coder ring the problem" (Expand search), "coder coder ring theory program" (Expand search), "coder decoder ring theory problem" (Expand search), "code code ring theory problem" (Expand search), "decoder codec ring theory problem" (Expand search), "coder coder string theory problem" (Expand search), "coder coder caring theory problem" (Expand search), "coder coder thing theory problem" (Expand search), "coder der ring theory problem" (Expand search), "coder coders using theory 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)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder ring theory problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder ring theory problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder ring theory problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder ring theory problem") OR ("api python python python programming"))*.