Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
thanh tung » thanh cong
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
dang cong » dung cong
cong manh » cong danh, duong manh, cong thanh
manh van » anh van, menh van, canh van
tung va » trung va, tuong va, dung va
va dang » van dang, va nang, va lang

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))) or (tien thanh)) - thanh tung va dang cong manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien xanh) OR (hien hanh))) OR (tien thanh)) - thanh tung va dang cong manh van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien xanh) or (hien hanh))) or (tien thanh)) - thanh tung va dang cong manh van ban*.