Perhaps you should try some spelling variations:
"coder coder threading cutting problem" » "coder coder threading turning problem" (Expand search), "coder coder threading milling problem" (Expand search), "coder coder turning cutting problem" (Expand search), "coder coder threading routing problem" (Expand search), "coder coder threading clustering problem" (Expand search), "coder coder threading covering problem" (Expand search), "coder decoder threading cutting problem" (Expand search), "code code threading cutting problem" (Expand search), "decoder codec threading cutting 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 threading cutting problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder threading cutting problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder threading cutting problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder threading cutting problem") OR ("on python python python programming"))*.