Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » hoc hien
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sang - thanh trung cua dung cong van tan tap~.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) sang - thanh trung cua dung cong van tan tap*.