Check on this fact: The most f*ked drawback for Vietnamese language is the difficult of variation and lack of definition in meaning programs. read more
However, if you define the power of a language and apply it to Vietnamese language to see if it has such power, then we can see some major drawbacks. First, in my opinion a language is considered powerful if it has capability to evolve itself. read more
The Use of Vietnamese in English Language Classes - Benefits and Drawbacks Dr. Bui Phu Hung, Nguyen Thi Tuyet Anh University of Finance and Marketing Vietnam Abstract: Vietnamese EFL teachers usually consider whether Vietnamese should be used in English teaching due to existence of controversial theories on the use of L1 in teaching L2. read more