Perhaps you should try some spelling variations:
"coding coding or convex programming" » "coding coding or cone programming" (Expand search), "coding coding or computer programming" (Expand search), "coding decoding or convex programming" (Expand search), "coding using or convex programming" (Expand search), "coding canine or convex programming" (Expand search), "coding coding of convex programming" (Expand search), "coding coding on convex programming" (Expand search), "coding coding over convex programming" (Expand search), "coding coding non convex programming" (Expand search)
"python python python python programming" » "pythons python pythons python programming" (Expand search), "piton python piton python programming" (Expand search), "pitons python pitons 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: (("coding coding or convex programming") OR ("python python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coding coding or convex programming\") OR (\"python python python python programming\"))*".
• Removing quotes may allow a broader search: (( coding coding or convex programming ) OR ( python python python python programming ))*.