Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
dung cuong » dung cong, dung luong, dang cuong
hieu lang » hieu quang, nhieu tang, hieu van
trung cap » truong cao, trung tam
cuong tap » luong tap, cong tac, luong tai
cap dung » ap dung, cao dung, chan dung
tap doan » tap quan
doan cap » doanh cao, dan ca, toan cao

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 trung cap dung cuong tap doan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (hieu lang)) - thanh trung cap dung cuong tap doan cap.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sang) or (hieu lang)) - thanh trung cap dung cuong tap doan cap*.