Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
nhung tuong » nhung huong, nhung phuong, hung vuong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
tuong tac » cong tac, luong tai, tuong lai
thong tu » phong tuc, thong tin, thong ke
tu nhung » tu chung, cua nhung, thi nhung
tac dan » tac danh, cac dan, tac da

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sang) or (hieu lang)) - thanh thong tu nhung tuong tac dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (hieu lang)) - thanh thong tu nhung tuong tac dan ca.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sang) or (hieu lang)) - thanh thong tu nhung tuong tac dan ca*.