Perhaps you should try some spelling variations:
xang luong » nang luong, hang luong, tang cuong
thiet tach » chiet tach, thien hach, thuat tach
thanh toan » thanh hoa, thanh san, tinh toan
manh tung » manh hung, thanh tung
tung chua » cung chua, cong chua, dung nhua
chua xang » chua nang, chuc nang, chu bang
manh toan » anh tuan, tinh toan
ho thiet » hoc thiet, hoa thiet, so thiet

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 thiet tach - manh tung chua xang luong ((manh toan) OR (thanh toan)) cau~.
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - manh tung chua xang luong ((manh toan) or (thanh toan)) cau*.