Perhaps you should try some spelling variations:
"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)
"coder coder test based program" » "coder decoder test based program" (Expand search), "code code test based program" (Expand search), "decoder codec test based program" (Expand search), "coder cover test based program" (Expand search), "coder cooper test based program" (Expand search), "coder power test based program" (Expand search), "coder coder teste baseado program" (Expand search), "coder coder forest based program" (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 test based program") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder test based program\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder test based program ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder test based program") OR ("on python python python programming"))*.