Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong nhan » thuong han, thong nhan, thuong nhat
chieu sang » chieu sach, chieu xanh, hieu lang
cap thuong » chap thuong, ca thuong, cao thuong
trung cap » truong cao, trung tam
hieu van » hieu va, thien van, lieu va
nhan dan » phan dau, gian dan, nhan tai
dan ban » van ban, can ban, dan ba
ban can » ban dan, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (hieu van)) - thanh trung cap thuong nhan dan ban can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu van)) - thanh trung cap thuong nhan dan ban can*.