Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thanh tung » thanh cong
tung tuan » trung tuan, hung tuan, quang tuan
tuan hang » tuan hoang, tuan bang, tuan dang
dong dat » dong vat, dung dat, dong ha
nong san » cong san, dong san, nong dan
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tap

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 hien nhanh - thanh tung tuan hang ((((dong dat) OR (nong san))) OR (cong dan)) toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - thanh tung tuan hang ((((dong dat) or (nong san))) or (cong dan)) toan cau*.