Perhaps you should try some spelling variations:
"coder coder complex convex programming" » "coder coder complex cone programming" (Expand search), "coder coder complex computer programming" (Expand search), "coder coder complex context programming" (Expand search), "coder coder complex contexts programming" (Expand search), "coder coder complex concept programming" (Expand search), "coder copper complex convex programming" (Expand search), "coder holder complex convex programming" (Expand search), "coder modern complex convex programming" (Expand search), "coder decoder complex convex programming" (Expand search), "code code complex convex programming" (Expand search), "decoder codec complex convex programming" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 complex convex programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder complex convex programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder complex convex programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder complex convex programming") OR ("on python python python programming"))*.