Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hien nhanh » hien hanh, thien thanh, tien thanh
thanh tung » thanh cong
tung thanh » trung thanh, tang thanh, dung thanh
thanh dong » thanh duong, thanh cong, hanh dong
cong manh » duong manh, cong thanh, hoang manh
cong danh » cuong danh, cong dan, cong thanh
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: hoc ((chieu xanh) or (hien nhanh)) - thanh tung thanh dong ((cong manh) OR (cong danh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hien nhanh)) - thanh tung thanh dong ((cong manh) OR (cong danh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (hien nhanh)) - thanh tung thanh dong ((cong manh) OR (cong danh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (hien nhanh)) - thanh tung thanh dong ((cong manh) OR (cong danh)) toan tap*.