Perhaps you should try some spelling variations:
"coder coder decoder fire propagation" » "coder coder decoder wave propagation" (Expand search), "coder coder decoder the propagation" (Expand search), "coder coder decoder light propagation" (Expand search), "coder encoder decoder fire propagation" (Expand search), "coder coder cover fire propagation" (Expand search), "coder coder decoder in propagation" (Expand search), "code code decoder fire propagation" (Expand search), "decoder codec decoder fire propagation" (Expand search), "codesc poder decoder fire propagation" (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 decoder fire propagation\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder decoder fire propagation ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder decoder fire propagation") OR ("api python python python programming"))*.