Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh xuan » tran xuan, tranh luan, thanh xuan
xuan thong » xuat thong, xuan thang, xuan truong
cong thanh » dong thanh, cong trinh, cong tan
hien xanh » hien hanh, hien nhanh, hien khanh
cong danh » cuong danh, cong dan, cong khanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (chieu xanh)) - canh tranh xuan thong ((cong danh) OR (cong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - canh tranh xuan thong ((cong danh) OR (cong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (chieu xanh)) - canh tranh xuan thong ((cong danh) OR (cong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu xanh)) - canh tranh xuan thong ((cong danh) OR (cong thanh)) toan cao*.