Perhaps you should try some spelling variations:
"coder coder complexity material program" » "coder coder complex material program" (Expand search), "coder coder complexity matrix program" (Expand search), "coder coder complexos material program" (Expand search), "coder code complexity material program" (Expand search), "coder model complexity material program" (Expand search), "coder lower complexity material program" (Expand search), "coder decoder complexity material program" (Expand search), "code code complexity material program" (Expand search), "decoder codec complexity material program" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python 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 complexity material program") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder complexity material program\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder complexity material program ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder complexity material program") OR ("_ python python python programming"))*.