Perhaps you should try some spelling variations:
doi programmers » non programmers (Expand search), of programmers (Expand search), and programmers (Expand search)
code functions » core functions (Expand search), vote functions (Expand search), node function (Expand search)
functions doi » functions from (Expand search), functions and (Expand search), functions _ (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
and python » in python (Expand search), on python (Expand search), api python (Expand search)
code code » code cdc (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( code code functions doi programmers ) OR ( and python python python programming ))~.