Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, nhieu tang
khong cong » thong cong, khong cang, chong cong
hieu lang » hieu quang, nhieu tang, hieu van
trung cao » truong cao, trung cap, trung co
cao khong » cao phong, cat khong, dao khong
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (((chieu sang) or (hieu lang)))) - thanh trung cao khong cong van thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (((chieu sang) OR (hieu lang)))) - thanh trung cao khong cong van thanh cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (((chieu sang) or (hieu lang)))) - thanh trung cao khong cong van thanh cau*.