Perhaps you should try some spelling variations:
"coder coder communication path problems" » "coder codes communication path problems" (Expand search), "coder modern communication path problems" (Expand search), "coder power communication path problems" (Expand search), "coder coder communication paths problems" (Expand search), "coder coder communication party problems" (Expand search), "coder coder communication par problems" (Expand search), "coder coder communication path problem" (Expand search), "coder coder communication math problems" (Expand search), "coder coder communication with problems" (Expand search), "coder decoder communication path problems" (Expand search), "code code communication path problems" (Expand search), "decoder codec communication path 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 communication path problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder communication path problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder communication path problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder communication path problems") OR ("on python python python programming"))*.