Perhaps you should try some spelling variations:
"coder coder based propagation problems" » "coder coder based perturbation problems" (Expand search), "coder coder based location problems" (Expand search), "coder coder based translation problems" (Expand search), "coder coder varied propagation problems" (Expand search), "coder coder and propagation problems" (Expand search), "coder coder back propagation problems" (Expand search), "coder decoder based propagation problems" (Expand search), "code code based propagation problems" (Expand search), "decoder codec based propagation problems" (Expand search), "coder code based propagation problems" (Expand search), "coder foder based propagation problems" (Expand search), "coder codec based 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.

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