Perhaps you should try some spelling variations:
code complexity » case complexity (Expand search), care complexity (Expand search), the complexity (Expand search)
mutation method » imputation method (Expand search), citation method (Expand search), rotation method (Expand search)
using mutation » using motion (Expand search), using vegetation (Expand search)
method python » method method (Expand search), python python (Expand search)
code code » code cdc (Expand search), code co (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: "(( code code complexity control program ) OR ( using mutation method python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( code code complexity control program ) OR ( using mutation method python programming ))*.