Perhaps you should try some spelling variations:
tthanh trung » thanh tung, thanh trang, hanh trang
thanh trung » thanh tung
thieu tach » thien hach, chiet tach, chieu sach
hoc thieu » toc thieu, hoc hien
tan thanh » tran thanh, tang thanh, toan thanh
thanh bac » nhanh bac, thanh bai, thanh san
va trong » va truong, va thong, va tuong
cong tan » cong tac, cong san, cong thanh

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

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