No food is believed to be more typical food in Viet Nam than Pho (rice noodles)

It is believed that Pho (rice noodles) is the most typical food in Viet Nam.

A more typical food than Pho (rice noodles) is believed in Viet Nam.

I believe that Viet Nam has the most typical food like Pho (rice noodles).

No food in Viet Nam is less typical than Pho (rice noodles).