[GeoNetwork-users] Wildcards

Hi

When doing a search using Geonetwork i have been unable to add any type of
wildcard to the text search and have it return anything.

I have metadata containing the word hydrography, but it will only return
records if I type the full word in, i have tried hydro* and hydro% but they
don't return anything.

Does anyone know which wildcards are valid in Geonetwork, or is this
something I need to set? (I am currently trialling geonetwork to see if it
is appropriate for our use.)

If it needs to be set can I have some instructions please!?!

Thanks in advance.

Caroline Levey