Perhaps you should try some spelling variations:
"coder coder and semidefinite programming" » "coder coder _ semidefinite programming" (Expand search), "coder coder and indefinite programming" (Expand search), "coder decoder and semidefinite programming" (Expand search), "code code and semidefinite programming" (Expand search), "decoder codec and semidefinite programming" (Expand search), "coder code and semidefinite programming" (Expand search), "coder codes and semidefinite programming" (Expand search), "coder poder and semidefinite programming" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder and semidefinite programming\") OR (\"in python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder and semidefinite programming ) OR ( in python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder and semidefinite programming") OR ("in python python python programming"))*.