Perhaps you should try some spelling variations:
"coder coder implement in problems" » "coder con implement in problems" (Expand search), "coder model implemented in problems" (Expand search), "coder code implementado in problems" (Expand search), "coder coder implement an problems" (Expand search), "coder coder implement it problems" (Expand search), "coder coder implemented in problems" (Expand search), "coder decoder implement in problems" (Expand search), "code code implement in problems" (Expand search), "decoder codec implement in problems" (Expand search), "coder coder implement in problem" (Expand search), "coder coder implement on problems" (Expand search), "coder coder implement open 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 implement in problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder implement in problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder implement in problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder implement in problems") OR ("on python python python programming"))*.