Perhaps you should try some spelling variations:
"coder coder string propagation problems" » "coder coder string perturbation problems" (Expand search), "coder coder string location problems" (Expand search), "coder coder string translation problems" (Expand search), "coder coder strain propagation problems" (Expand search), "coder coder cutting propagation problems" (Expand search), "coder coder tracing propagation problems" (Expand search), "coder cordel string propagation problems" (Expand search), "coder closed string propagation problems" (Expand search), "coder modelo string propagation problems" (Expand search), "coder decoder string propagation problems" (Expand search), "code code string propagation problems" (Expand search), "decoder codec string 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 string propagation problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder string propagation problems\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder string propagation problems ) OR ( api python python python programming ))*.