show posts from some tags in one tag page

hi,

i want show posts from some tags in one tag page!

for example i want show posts from tags: t1, t2, t3, t4 in page tag t1 like this: localhost/?tag=t1

i did this with this query:

query_posts(array('post_type'=>'post','paged'=>$paged,'posts_per_page'=>1,'tag'=>'t1,t2,t3,t4'));

for example t1 has 2 posts, but sum t1,t2,t3,t4 more 2 posts and when i go to page 3 i see 404 error page!!! 🙁

please help me