Perhaps you should try some spelling variations:
"coder some convex function problem" » "coder some convex function problems" (Expand search), "coder some convex functions problems" (Expand search), "coder some convex functional problems" (Expand search), "coder some convex functions problem" (Expand search), "coder some complex functions problem" (Expand search), "coder some control function problem" (Expand search), "coder space convex function problem" (Expand search), "coder some concept function problem" (Expand search), "code some convex function problem" (Expand search), "border some convex function problem" (Expand search), "over some convex function problem" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ 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 some convex function problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder some convex function problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder some convex function problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder some convex function problem") OR ("_ python python python programming"))*.