Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
manh trung » manh tung, thanh trung, manh hung
tuong cong » truong cong, trong cong, tong cong
hien xanh » hien hanh, chieu xanh, hien khanh
manh toan » thanh toan, anh tuan, tinh toan
trung va » truong va, trang va, trung ha
va tuong » va thuong, va thong, xa truong
dan than » dan chan, ban than, van than

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 (hien nhanh)) - manh trung va tuong cong ((dan than) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - manh trung va tuong cong ((dan than) OR (manh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - manh trung va tuong cong ((dan than) or (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - manh trung va tuong cong ((dan than) or (manh toan)) cau*.