Perhaps you should try some spelling variations:
"coder coder optimization problems progress" » "coder code optimization problems progress" (Expand search), "coder modern optimization problems progress" (Expand search), "coder powder optimization problems progress" (Expand search), "coder coder optimization problemas progressos" (Expand search), "coder coder optimization problems problems" (Expand search), "coder coder optimization problems problemas" (Expand search), "coder decoder optimization problems progress" (Expand search), "code code optimization problems progress" (Expand search), "decoder codec optimization problems progress" (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 optimization problems progress") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder optimization problems progress\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder optimization problems progress ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder optimization problems progress") OR ("on python python python programming"))*.