Perhaps you should try some spelling variations:
ngang thanh » nang thanh, nganh thanh, ngan thanh
cong ngang » cong nhan, cong quang, cong lang
hoc thieu » hoc hien
van doanh » toan doanh, van dong, van thanh
doanh cua » doanh luan
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) tinh - van doanh cua dong cong ngang thanh san~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) tinh - van doanh cua dong cong ngang thanh san*.