Perhaps you should try some spelling variations:
thanh trung » thanh tung
thanh trang » hanh trang, thanh thang, thanh tran
dang cong » dung cong
khi sach » khi sac, khoa sach, khau sach
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khi sach - ((thanh trung) or (thanh trang)) va dang cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khi sach - ((thanh trung) OR (thanh trang)) va dang cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: doi khi sach - ((thanh trung) or (thanh trang)) va dang cong dan toan cao*.