Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
tuong khoa » luong khoa, duong khoa, dung khoa
cong thanh » dong thanh, cong trinh, cong tan
thanh hang » thanh hoang, thanh thang, tranh hang
doi chieu » doc hieu, doi chi, mot chieu
khoa dung » hoc dung, khoa cong
dung cong » dung trong
hang dau » hang va, hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - thanh tuong khoa dung cong thanh hang dau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tuong khoa dung cong thanh hang dau*.