Perhaps you should try some spelling variations:
functions improvements » functional improvements (Expand search), function improvement (Expand search), functional improvement (Expand search)
modern function » modern functional (Expand search), modern fiction (Expand search), modelo function (Expand search)
java functions » gamma functions (Expand search), and functions (Expand search), zeta functions (Expand search)
function java » function j (Expand search), function job (Expand search), function jump (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
using codigo » using indigo (Expand search), using coding (Expand search), using codium (Expand search)

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

• Removing quotes may allow a broader search: (( modern function java functions improvements ) OR ( using codigo python python programming ))~.