Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung song » nhung cong, nhung bong, nhung chong
van nguyen » toan nguyen, tran nguyen, xuan nguyen
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
trung va » truong va, trang va, trung ha
song van » hoang van, trong van, duong van

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 hanh)) - thanh trung va nhung song van nguyen van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - thanh trung va nhung song van nguyen van.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - thanh trung va nhung song van nguyen van*.