Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung cap » truong cao, trung tam
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
tap quan » tac quan, hai quan
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: theo ((dieu hanh) or (chieu sang)) - thanh trung cap ((nhung don) or (hang cong)) tap quan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dieu hanh) OR (chieu sang)) - thanh trung cap ((nhung don) OR (hang cong)) tap quan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) or (chieu sang)) - thanh trung cap ((nhung don) or (hang cong)) tap quan tap*.