Not all of the fare rules are displayed in the lines above, just the main restrictions.

But the TLXPV74 line indicates applicability only from 24 DEC 10 to 26 DEC 10, so your flights don't fall in that period.

The TLXSL95 fare requires a minimum 14 day stay at the destination (see last number in the sequence), and you are only staying 9.

The ULXSL95 could be applicable unless there is a restriction in the rule which prevents it (such as not being a resident of Slobovia, not being over 65, etc.).

So you would need to find the fare rules somewhere (travel agencies have online access to those) to determin why it is not applicable.