Perhaps you should try some spelling variations:
"coder coder theory posed problems" » "coder coder theory old problems" (Expand search), "coder coder theory coupled problems" (Expand search), "coder code theory posed problems" (Expand search), "coder codes theory posed problems" (Expand search), "coder modern theory posed problems" (Expand search), "coder coder theory based problems" (Expand search), "coder coder theory power problems" (Expand search), "coder coder theory post problems" (Expand search), "coder decoder theory posed problems" (Expand search), "code code theory posed problems" (Expand search), "decoder codec theory posed 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 theory posed problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder theory posed problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder theory posed problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder theory posed problems") OR ("api python python python programming"))*.