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
van thanh » van tuan
ban thanh » ban hanh, ban hang
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) OR (ban 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) OR (ban thanh)))) chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - hanh trinh cua dong cong ((son thanh) or (((van thanh) OR (ban thanh)))) chau".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh trinh cua dong cong ((son thanh) or (((van thanh) OR (ban thanh)))) chau*.