Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
hien tach » chiet tach, vien bach, hien hanh
tong cong » trong cong, cong cong, dung cong
cua tong » cua cong, cua dong, cua nong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien tach) OR (thien hach)) - ((hanh trang) OR (hanh trinh)) cua tong cong van toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien tach) or (thien hach)) - ((hanh trang) OR (hanh trinh)) cua tong cong van toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien tach) or (thien hach)) - ((hanh trang) OR (hanh trinh)) cua tong cong van toan ban*.