Perhaps you should try some spelling variations:
"coder rotation or convex programming" » "coder rotation or cone programming" (Expand search), "coder rotation or computer programming" (Expand search), "under rotation or convex programming" (Expand search), "power rotation or convex programming" (Expand search), "center rotation or convex programming" (Expand search), "coder rotation of convex programming" (Expand search), "coder rotation on convex programming" (Expand search), "coder rotation how convex programming" (Expand search), "coder rotation non 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), "rpa python 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 rotation or convex programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder rotation or convex programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder rotation or convex programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder rotation or convex programming") OR ("api python python python programming"))*.