Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
cong sang » cong lang, cong vang, cong bang
trinh va » trinh van, trinh vat, trinh ve
cong san » cong tac
tuan thu » toan thuc, van thu
va nang » van nang, da nang, cam nang

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 tinh)) - hanh trinh va nang ((cong san) or (cong sang)) tuan thu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu tinh)) - hanh trinh va nang ((cong san) OR (cong sang)) tuan thu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu tinh)) - hanh trinh va nang ((cong san) or (cong sang)) tuan thu".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu tinh)) - hanh trinh va nang ((cong san) or (cong sang)) tuan thu*.