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 cation viva program" » "coder code creation viva program" (Expand search), "coder coder cation vida program" (Expand search), "coder coder cation java programs" (Expand search), "coder decoder cation viva program" (Expand search), "code code cation viva program" (Expand search), "decoder codec cation viva 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 cation viva program") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder cation viva program\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder cation viva program ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder cation viva program") OR ("on python python python programming"))*.