Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung cong » truong cong, trong cong, trung uong
hieu manh » hieu nganh, dieu hanh, hien hanh
tranh cua » doanh cua, manh cua
cua trung » cua truong, xuan trung, cua nhung
cong tan » cong tac, cong san, cong thanh
tran tan » tran tuan, tran van, tran thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((((chieu xanh) OR (hieu manh))) or (chieu tinh)) - canh tranh cua trung cong tan tran tan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((((chieu xanh) OR (hieu manh))) OR (chieu tinh)) - canh tranh cua trung cong tan tran tan*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((((chieu xanh) OR (hieu manh))) or (chieu tinh)) - canh tranh cua trung cong tan tran tan*".