Perhaps you should try some spelling variations:
"coder propagation channel coding program" » "mode propagation channel coding program" (Expand search), "model propagation channel coding program" (Expand search), "modes propagation channel coding program" (Expand search), "coder propagation channel using program" (Expand search), "coder propagation channel cloning program" (Expand search), "coder propagation channel loading program" (Expand search), "coder propagation channel cooling programs" (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 propagation channel coding program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder propagation channel coding program\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder propagation channel coding program ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder propagation channel coding program") OR ("api python python python programming"))*.