Perhaps you should try some spelling variations:
thien thanh » thi thanh, hien hanh, chien tranh
thanh trung » thanh tung
hien nhanh » hien hanh, dien thanh, vien nganh
tien thanh » tien thinh, tran thanh, den thanh
trung tuan » trung thanh, trung tam, tran tuan
cong ngang » cong nhan, cong quang, cong lang
ngang toan » nganh toan, dang toan, quang toan
tuan hang » tuan hoang, tuan bang, tuan dang
hang cong » dang cong, hang nong, bang cong
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((hien nhanh) or (thien thanh))) or (tien thanh)) - thanh trung tuan hang cong ngang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien nhanh) OR (thien thanh))) OR (tien thanh)) - thanh trung tuan hang cong ngang toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien nhanh) or (thien thanh))) or (tien thanh)) - thanh trung tuan hang cong ngang toan cau*.