Perhaps you should try some spelling variations:
thien dang » thien bang, thien danh, thien nang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
cua nhung » va nhung
tan toan » tan tran, tap toan, dan toan
van toan » van tuan, van tan, van thanh

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: hoc thien dang - ((canh tranh) OR (thanh tung)) cua nhung cong ((tan toan) OR (van toan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien dang - ((canh tranh) or (thanh tung)) cua nhung cong ((tan toan) OR (van toan)) cao~".
• Adding a wildcard symbol may retrieve word variants: hoc thien dang - ((canh tranh) or (thanh tung)) cua nhung cong ((tan toan) OR (van toan)) cao*.