Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
cuon danh » cuong danh, cuoi dan, cum danh
danh toan » manh toan, anh toan, dan toan
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua nong
cua dang » cua cong, cua ban
toan cau » 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 - canh tranh ((cua tong) or (((cua dong) OR (cua dang)))) cuon danh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh ((cua tong) OR (((cua dong) OR (cua dang)))) cuon danh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tranh ((cua tong) or (((cua dong) OR (cua dang)))) cuon danh toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh ((cua tong) or (((cua dong) OR (cua dang)))) cuon danh toan cau*.