Perhaps you should try some spelling variations:
"coder precoder convexity and programming" » "coder precoder convexity _ programming" (Expand search), "coder precoder convexity goal programming" (Expand search), "coder decoder convexity and programming" (Expand search), "coder precoder complexity and programming" (Expand search), "coder precoder convex and 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 precoder convexity and programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder convexity and programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder convexity and programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder convexity and programming") OR ("api python python python programming"))*.