Perhaps you should try some spelling variations:
thanh trung » thanh tung
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
doc hieu » hoc thieu, hoc hien
trung va » truong va, trang va, trung ha
ban danh » ban doanh, ban hanh, ban dan
danh dau » lanh dao, hang dau, danh tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) xanh - thanh trung va ((hang cong) OR (dang cong)) ban danh dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) xanh - thanh trung va ((hang cong) OR (dang cong)) ban danh dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (toc thieu)) xanh - thanh trung va ((hang cong) OR (dang cong)) ban danh dau".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) xanh - thanh trung va ((hang cong) OR (dang cong)) ban danh dau*.