Perhaps you should try some spelling variations:
"coder coder data semidefinite programming" » "coder coder and semidefinite programming" (Expand search), "coder coder set semidefinite programming" (Expand search), "coder coder to semidefinite programming" (Expand search), "coder decoder data semidefinite programming" (Expand search), "code code data semidefinite programming" (Expand search), "decoder codec data semidefinite programming" (Expand search), "coder cover data semidefinite programming" (Expand search), "coder code data semidefinite programming" (Expand search), "coder border data semidefinite programming" (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 data semidefinite programming") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder data semidefinite programming\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder data semidefinite programming ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder data semidefinite programming") OR ("_ python python python programming"))*.