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