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