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