Tag issue 1.5.3.1

Hi,
I found a little bug with tag system in oc: when i add the single tag "inclinazione elettrica" in a product, and in anothert product add tag "inclinazione manuale", in the tag search of inclinazione elettrica oc found all product with both "elettrica" or "manuale". Honestly, this is a very big problem for me. I need multi word tag system, where cliking the tag "inclinazione elettrica" will find only product with "inclinazione elettrica" and not product with "inclinazione other word".
I simply write inclinazione elettrica, othertag, othertag etc...
But i think OC split inclinazione elettrica in "inclinazione" and "elettrica" tags. But i think it shouldn't be like this.
Anyone can help me? i'm doing something wrong? Thanks

I have product name with tag nokia phone and samsung phone and other phones, when I click tag nokia phone, all the product tags contain PHONE will appear in search result.

THIS IS NOT GOOD because I only want to find the products with TAG NOKIA PHONE.

Can any one help to sort it out?

I have the same problem too. I believe this is a real bug.

If anyone has solution, please post here to help others.