The forum search has not been working well for me lately, it keeps coming up with:
The following words are either very common, too long, or too short and were not included in your search:
can't search onvf()mem_setstr_catsys_t
etc, etc. I think the fact that it is stripping out the () and underscores, etc, and what is left is less than 4 chars. Perhaps it shouldn't do so and separate by white space instead?
I usually resort to using google like this:
site:4d.websitetoolbox.com sys_t
Perhaps a google search function on the forum page would help?