Perhaps you should try some spelling variations:
"coder coder pattern propagation problems" » "coder coder pattern perturbation problems" (Expand search), "coder coder pattern location problems" (Expand search), "coder coder pattern translation problems" (Expand search), "coder coder matte propagation problems" (Expand search), "coder coder pattern separation problems" (Expand search), "coder coder photon propagation problems" (Expand search), "coder cover pattern propagation problems" (Expand search), "coder cover patterns propagation problems" (Expand search), "coder powder pattern propagation problems" (Expand search), "coder decoder pattern propagation problems" (Expand search), "code code pattern propagation problems" (Expand search), "decoder codec pattern 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 pattern propagation problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder pattern propagation problems\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder pattern propagation problems ) OR ( api python python python programming ))*.