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