Perhaps you should try some spelling variations:
than tinh » thanh tinh, than kinh, thai tinh
trong dan » trong dang, trong tan, trong ban
trong san » trong cac, cong san, dong san
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
cua dong » chua dong, cua cong, cua dang
toan cau » toan cao, toan ban, toan tap

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: ((ho chieu) OR (toc thieu)) xanh - than tinh cua dong ((trong dan) OR (trong san)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (toc thieu)) xanh - than tinh cua dong ((trong dan) OR (trong san)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) xanh - than tinh cua dong ((trong dan) OR (trong san)) toan cau*.