Perhaps you should try some spelling variations:
hoc thieu » hoc hien
dang cong » dung cong
thanh ta » thanh tra, thanh tai, thanh tay
van dang » van dong, van dung, van nang
cong tan » cong tac, cong san, cong thanh
tan nhan » tran nhan, tao nhan, van nhan
nhan bac » nhanh bac, ngan bac, nha bac
ta van » tan van, tap van, va van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc thieu) or (hoc thieu)) tinh - thanh ta van dang cong tan nhan bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (hoc thieu)) tinh - thanh ta van dang cong tan nhan bac.
• Adding a wildcard symbol may retrieve word variants: ((toc thieu) or (hoc thieu)) tinh - thanh ta van dang cong tan nhan bac*.