Perhaps you should try some spelling variations:
"coder coder complexity dc program" » "coder code complexity dc program" (Expand search), "coder model complexity dc program" (Expand search), "coder lower complexity dc program" (Expand search), "coder coder complexity ec program" (Expand search), "coder coder complexity doi program" (Expand search), "coder coder complexity dsp program" (Expand search), "coder decoder complexity dc program" (Expand search), "code code complexity dc program" (Expand search), "decoder codec complexity dc program" (Expand search), "coder coder complexity d.c program" (Expand search), "coder coder complexity c program" (Expand search), "coder coder complexity abc program" (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 complexity dc program") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder complexity dc program\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder complexity dc program ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder complexity dc program") OR ("on python python python programming"))*.