Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dong cong » duong cong, dung cong, dang cong
son thanh » ban thanh
van thanh » ban thanh, van tuan
cua dong » chua dong, cua cong, cua dang

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