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