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