Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
tranh cua » doanh cua, manh cua
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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 - hanh ((trung cua) or (tranh cua)) nhung cong tan ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh ((trung cua) OR (tranh cua)) nhung cong tan ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh ((trung cua) or (tranh cua)) nhung cong tan ((toan tai) or (toan ban))*.