Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
anh dung » anh dong, anh huong, sach dung
cong tac » cong ty
tac tren » rac tren, tai tren, tap tren
tren tau » tren thuc, tren may, tren dat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (hieu manh)) - anh dung luan chung cong tac tren tau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - anh dung luan chung cong tac tren tau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - anh dung luan chung cong tac tren tau*.