Perhaps you should try some spelling variations:
"coder coder boolean pre programming" » "coder coder boolean re programming" (Expand search), "coder coder boolean free programming" (Expand search), "coder coder boolean core programming" (Expand search), "coder model boolean pre programming" (Expand search), "coder decoder boolean pre programming" (Expand search), "code code boolean pre programming" (Expand search), "decoder codec boolean pre programming" (Expand search), "coder coder boolean like 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 boolean pre programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder boolean pre programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder boolean pre programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder boolean pre programming") OR ("on python python python programming"))*.