Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
thanh tran » thanh trang, thanh toan, thanh tra
cuong cong » cong cong, luong cong, dung cong
duong cong » dung cong, luong cong, duong trong
hoc thieu » toc thieu, hoc hien
tran xuan » tran quang, tran van
dan khoan » dan khoa, dai khoang, toan khoan
khoan va » doan va, khoa ma, nhan va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - thanh tran xuan ((cuong cong) OR (duong cong)) dan khoan va~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - thanh tran xuan ((cuong cong) or (duong cong)) dan khoan va*.