Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
chieu sang » chieu sach, chieu xanh, hieu lang
hien hanh » dieu hanh
anh thanh » danh thanh, nhanh thanh, thanh thanh
tran dung » tran dang, tran hung, tran quang
dung cong » dung trong
van thanh » ban thanh, van tuan

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 hanh) or (chieu sang)) - anh thanh tran dung cong ((xuan toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (chieu sang)) - anh thanh tran dung cong ((xuan toan) OR (van thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (chieu sang)) - anh thanh tran dung cong ((xuan toan) or (van thanh)) cau*.