Perhaps you should try some spelling variations:
truong dong » trong dong, truong dang, thuong dong
thanh tung » thanh cong
tuong dong » tuong duong, trong dong, cuong duong
tung cao » nung cao, truong cao, trung cap
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
ho lieu » co lieu, ho kieu, ho chieu
so lieu » so dieu

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 (so lieu)) tinh - thanh tung cao ((truong dong) OR (tuong dong)) tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) or (so lieu)) tinh - thanh tung cao ((truong dong) OR (tuong dong)) tan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (so lieu)) tinh - thanh tung cao ((truong dong) OR (tuong dong)) tan toan cau*.