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