Perhaps you should try some spelling variations:
tuong tuong » tuong duong, duong truong, thong thuong
trong tuong » trong thuong, trong luong, trong cong
chieu xanh » chieu sach, chieu sang, chieu tinh
hien xanh » hien hanh, hien nhanh, hien khanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
gian tap » gian tay, gian tam, gian thai

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 tinh chat ((trong tuong) OR (tuong tuong)) dan gian tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (chieu xanh)) - hanh tinh chat ((trong tuong) OR (tuong tuong)) dan gian tap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu xanh)) - hanh tinh chat ((trong tuong) OR (tuong tuong)) dan gian tap*.