Perhaps you should try some spelling variations:
"coder coder paraffin embedding problem" » "coder coder paraffin embedded problem" (Expand search), "coder coder paraffin emerging problem" (Expand search), "coder decoder paraffin embedding problem" (Expand search), "code code paraffin embedding problem" (Expand search), "decoder codec paraffin embedding problem" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python 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 paraffin embedding problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder paraffin embedding problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder paraffin embedding problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder paraffin embedding problem") OR ("_ python python python programming"))*.