Perhaps you should try some spelling variations:
"coder coder binary propagation problems" » "coder coder binary perturbation problems" (Expand search), "coder coder binary location problems" (Expand search), "coder coder binary translation problems" (Expand search), "coder coder back propagation problems" (Expand search), "coder coder beam propagation problems" (Expand search), "coder coder fire propagation problems" (Expand search), "coder cover binary propagation problems" (Expand search), "coder over binary propagation problems" (Expand search), "coder under binary propagation problems" (Expand search), "coder decoder binary propagation problems" (Expand search), "code code binary propagation problems" (Expand search), "decoder codec binary propagation 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder binary propagation problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder binary propagation problems\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder binary propagation problems ) OR ( api python python python programming ))*.