Perhaps you should try some spelling variations:
thanh tung » thanh cong
tuan dung » tuan duong, tan dung, tuan dang
tran dung » tran dang, tran hung, tran quang
tan khang » van khang, tao khang, tinh khang
khang cap » khan cap, khang chan, hang ca
cong tan » cong tac, cong san, cong thanh
ho lieu » so lieu, ho kieu, ho chieu
co lieu » cot lieu, co hieu, so lieu

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 lieu) OR (co lieu)) tinh - thanh tung ((tuan dung) OR (tran dung)) cong tan khang cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) or (co lieu)) tinh - thanh tung ((tuan dung) OR (tran dung)) cong tan khang cap~".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (co lieu)) tinh - thanh tung ((tuan dung) OR (tran dung)) cong tan khang cap*.