Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
hung cong » nhung cong, hung cuong, phung cong
thang tu » thong tu, thanh tu, hang tu
cong tac » cong ty
tu hung » tu chung, tu nhung, tu vung
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)) - nhanh thang tu hung cong tac dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (hieu lang)) - nhanh thang tu hung cong tac dan ca*.