Perhaps you should try some spelling variations:
"coder coder propagation _ programming" » "coder mode propagation _ programming" (Expand search), "coder model propagation _ programming" (Expand search), "coder modes propagation _ programming" (Expand search), "coder decoder propagation _ programming" (Expand search), "code code propagation _ programming" (Expand search), "decoder codec propagation _ programming" (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)

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