Perhaps you should try some spelling variations:
"coder coder complexity goa problems" » "coder code complexity goa problems" (Expand search), "coder model complexity goa problems" (Expand search), "coder lower complexity goa problems" (Expand search), "coder coder complexity doi problems" (Expand search), "coder coder complexity how problems" (Expand search), "coder coder complexity folha problems" (Expand search), "coder coder complexity rwa problems" (Expand search), "coder coder complexity angola problems" (Expand search), "coder coder complexity data problems" (Expand search), "coder decoder complexity goa problems" (Expand search), "code code complexity goa problems" (Expand search), "decoder codec complexity goa 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 complexity goa problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder complexity goa problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder complexity goa problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder complexity goa problems") OR ("on python python python programming"))*.