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