Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tran » thanh trang, thanh toan, thanh tra
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
cua dang » cua cong
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - hanh tang ((cua ban) or (cua dang)) cong thanh tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - hanh tang ((cua ban) OR (cua dang)) cong thanh tran van*.