Perhaps you should try some spelling variations:
"using computational complexity coverage program" » "and computational complexity coverage program" (Expand search), "using computational complete coverage program" (Expand search), "using computational complexity convergence program" (Expand search), "using computational complexity coverage problem" (Expand search), "using computational complexity coverage from" (Expand search)
"using in python python programming" » "using in pythons python programming" (Expand search), "using in piton python programming" (Expand search), "using in pitons python programming" (Expand search), "using _ 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: "((\"using computational complexity coverage program\") OR (\"using in python python programming\"))~".
• Removing quotes may allow a broader search: (( using computational complexity coverage program ) OR ( using in python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational complexity coverage program") OR ("using in python python programming"))*.