(autocomplete) Plugin not returning all elements and limiting

(autocomplete) Plugin not returning all elements and limiting

Hi guys
I've got the autocomplete plugin

I've noticed that it is not showing all the elements returned by the mySQL query...

1) How can I debug and check if the list is showing all the items it should? For example, I've checked that writing "cañ" -w/o quotes- should return and show 312 elements, but it does not show more than 20

2) Basing on 1)... showing 312 elements would be a waste of load time, should I limit query or should I touch autocomplete plugin's code?

Thanks a lot in advance