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