Perhaps you should try some spelling variations:
functions improvements » functional improvements (Expand search), function improvement (Expand search), functional improvement (Expand search)
coder function » modern function (Expand search), power function (Expand search), over 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 python » usando python (Expand search), in python (Expand search)
using using » using fusing (Expand search), housing using (Expand search), nursing using (Expand search)

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

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