Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
luat nhung » luat chung, luat thuong, thuat nhung
cong thanh » dong thanh, cong trinh, truong thanh
hieu lang » chieu sang, hieu quang, nhieu tang
cong tan » cong tac, cong san, cong ty
toan tap » toan ban

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

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