Perhaps you should try some spelling variations:
chua tinh » cua tinh, cha tinh, thuat tinh
hanh tung » thanh tung, manh tung, hanh dung
luan hung » luan chung, lan hung, luan ung
hung cong » nhung cong, hung cuong, phung cong
chu tinh » chau tinh, cuu tinh, chu tich
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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 ((chu tinh) OR (chua tinh)) - ((hanh tung) OR (anh tang)) luan hung cong tan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu tinh) OR (chua tinh)) - ((hanh tung) or (anh tang)) luan hung cong tan than cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chu tinh) OR (chua tinh)) - ((hanh tung) or (anh tang)) luan hung cong tan than cau*.