Perhaps you should try some spelling variations:
"coder coder nonconvex math programming" » "coder coder nonconvex and programming" (Expand search), "coder coder nonconvex based programming" (Expand search), "coder coder nonconvex goal programming" (Expand search), "coder coder nonconvex path programming" (Expand search), "coder coder nonconvex smooth programming" (Expand search), "coder coder nonconvex sets programming" (Expand search), "coder decoder nonconvex math programming" (Expand search), "code code nonconvex math programming" (Expand search), "decoder codec nonconvex math 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 nonconvex math programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder nonconvex math programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder nonconvex math programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder nonconvex math programming") OR ("api python python python programming"))*.