Perhaps you should try some spelling variations:
hien nhanh » thien thanh, tien thanh, dien thanh
thanh tung » thanh cong
hien hanh » dieu hanh
cua thong » cua thuong, cua khong, cua tong
hoang van » hang va
tung cua » trung cua, tuong cua, dung cua
cong van » cong vang, cong san, song van
phan cau » phan dau, phan cac, phan tu

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 (hien hanh)) - thanh tung cua thong ((cong van) or (hoang van)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (hien hanh)) - thanh tung cua thong ((cong van) OR (hoang van)) phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (hien hanh)) - thanh tung cua thong ((cong van) or (hoang van)) phan cau*.