Perhaps you should try some spelling variations:
"coder coder mining triangle problems" » "coder coder mining triangle rules" (Expand search), "coder coder mining triangle project" (Expand search), "coder code mining triangle problems" (Expand search), "coder copper mining triangle problems" (Expand search), "coder cooper mining triangle problems" (Expand search), "coder decoder mining triangle problems" (Expand search), "code code mining triangle problems" (Expand search), "decoder codec mining triangle problems" (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 mining triangle problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder mining triangle problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder mining triangle problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder mining triangle problems") OR ("on python python python programming"))*.