Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tran » thanh trang, thanh toan, thanh tra
tran thanh » ban thanh, van thanh, quan thanh
thong cong » trong cong, tong cong, thong thong
trinh quan » tinh quang, trinh luat, trinh han
hieu lang » hieu quang, nhieu tang, hieu van
quan tap » quan tai, quan lap, quan tam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu lang) or (chieu sang)) - thanh tran thanh thong cong trinh quan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (chieu sang)) - thanh tran thanh thong cong trinh quan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (chieu sang)) - thanh tran thanh thong cong trinh quan tap*.