Perhaps you should try some spelling variations:
"coder precoder coverage convex programming" » "coder precoder coverage cone programming" (Expand search), "coder precoder coverage computer programming" (Expand search), "coder code coverage convex programming" (Expand search), "coder precoder coverage content programming" (Expand search), "coder precoder coverage index programming" (Expand search), "coder precoder coverage curve programming" (Expand search), "coder decoder coverage convex 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 precoder coverage convex programming") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder coverage convex programming\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder coverage convex programming ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder coverage convex programming") OR ("_ python python python programming"))*.