Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chua dong » cua dong, ha dong, huy dong
hanh tang » anh tang, hanh mang, hanh tung
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan ban » toan ban, tang 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: theo ((chuc nang) OR (chua dong)) - ((hanh tang) OR (hanh trang)) cua dung cong van tan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc nang) or (chua dong)) - ((hanh tang) OR (hanh trang)) cua dung cong van tan ban~".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc nang) or (chua dong)) - ((hanh tang) OR (hanh trang)) cua dung cong van tan ban*.