As the title says, i can't seem to search using multiple tags in dolphin. For my test i tried to create a test folder, restrict Nepomuk to index only that folder, create 3 files on it and assign everyone a different tag.

/test
/test/file1 (test1)
/test/file2 (test2)
/test/file3 (test3)

It work if i try to search for every tag individually but i don't get any results when using 2 or more tags, i tried "tag1 tag2", "tag1 AND tag2", "tag1 OR tag2", "hasTag:tag1 hasTag:tag2", "hasTag:tag1 or hasTag:tag2". Everyone of these queries just makes virtuoso go to 100% cpu for like 15-20 seconds before showing no results.

I am doing something wrong or Nepomuk cannot handle this type of simple query?

I have several problems searching with Dolphin too and basically is not working.

Try KRunner or Nepoogle, both are working fine.