Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
hoc thieu » toc thieu, hoc hien
ca thuong » cao thuong, cua thuong, va thuong
ho chieu » theo chieu, doi chieu, mot chieu
trung ca » trung cap, truong ca, trung cua
ban chan » dan chan, ban nhan, ban can
ban than » ban thanh, van thanh, ban hang

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: ((ho chieu) OR (hoc thieu)) tinh - thanh trung ca thuong cong ((ban chan) OR (ban than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) tinh - thanh trung ca thuong cong ((ban chan) OR (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - thanh trung ca thuong cong ((ban chan) OR (ban than)) cau*.