Perhaps you should try some spelling variations:
"coder coder hard constraint programming" » "coder coder hard constraints programming" (Expand search), "coder coder chord constraint programming" (Expand search), "coder coder hard constrained programming" (Expand search), "coder decoder hard constraint programming" (Expand search), "code code hard constraint programming" (Expand search), "decoder codec hard constraint programming" (Expand search), "coder coater hard constraint programming" (Expand search), "coder powder hard constraint programming" (Expand search), "coder power hard constraint 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 hard constraint programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder hard constraint programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder hard constraint programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder hard constraint programming") OR ("api python python python programming"))*.