Perhaps you should try some spelling variations:
"coder coder complexity formation problem" » "coder coder complexity information problem" (Expand search), "coder coder complexity ecoformation problem" (Expand search), "coder coder complex formation problem" (Expand search), "coder coder complexity deformation problems" (Expand search), "coder coder complexity location problem" (Expand search), "coder coder complexity formation program" (Expand search), "coder code complexity formation problem" (Expand search), "coder model complexity formation problem" (Expand search), "coder lower complexity formation problem" (Expand search), "coder decoder complexity formation problem" (Expand search), "code code complexity formation problem" (Expand search), "decoder codec complexity formation problem" (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 formation problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder complexity formation problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder complexity formation problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder complexity formation problem") OR ("on python python python programming"))*.