The Google AdWords External tool offers an extensive choice of country-specific suggestions. I've only used it to distinguish between US and UK, though, but the suggestions offered did confirm my expectations about vocabulary used. While Google clearly sees more searches than the other tools do, the data does go through some filters and rounding off, depending on your query.
Wordtracker has such a small sample size in the US that it's hard to imagine it would do better in targeting specific countries. That said, I haven't tried it in the countries you mention.
The free Trellian Keyword Discovery Tool doesn't allow you to select country, but their premium tools do offer "many regional and language specific keyword databases." Again, I haven't tried these for countries you mention.