Perhaps you should try some spelling variations:
trinh luatng » trinh luan, trinh quang, trinh quan
chieu xanh » chieu sach, chieu sang, chieu tinh
hien xanh » hien hanh, hien nhanh, hien khanh
trong tan » trong quan, trong cac, trong ca
tran chau » tranh chap, tran huu
luat » luan, xuat
luatng » luanng, xuatng

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: hoc ((hien xanh) OR (chieu xanh)) - hanh ((trinh luat) OR (trinh luatng)) dung trong tan tran chau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - hanh ((trinh luat) or (trinh luatng)) dung trong tan tran chau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (chieu xanh)) - hanh ((trinh luat) or (trinh luatng)) dung trong tan tran chau*.