Perhaps you should try some spelling variations:
thiet nhung » tuyet nhung, thi nhung, biet nhung
trinh thiet » trinh viet, trinh thi
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh trinh » canh tranh, hanh chinh
cong thanh » dong thanh, cong trinh, truong thanh
tran chau » tranh chap, tran huu
cong tan » cong tac, cong san, cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu xanh) or (chieu sang)) - hanh trinh thiet nhung ((cong tan) OR (cong thanh)) tran chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sang)) - hanh trinh thiet nhung ((cong tan) OR (cong thanh)) tran chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chieu sang)) - hanh trinh thiet nhung ((cong tan) OR (cong thanh)) tran chau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sang)) - hanh trinh thiet nhung ((cong tan) OR (cong thanh)) tran chau*.