Perhaps you should try some spelling variations:
"coder computational complexity in program" » "code computational complexity in program" (Expand search), "poder computacional complexity in program" (Expand search), "model computational complexity in program" (Expand search), "coder computational complexity and program" (Expand search), "coder computational complexity in programs" (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: "((\"coder computational complexity in program\") OR (\"using in python python programming\"))~".
• Removing quotes may allow a broader search: (( coder computational complexity in program ) OR ( using in python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder computational complexity in program") OR ("using in python python programming"))*.