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