Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu quang » thieu quang, hieu quan, hieu qua
thong dong » thong duong, thuong dong, thong cong
hieu lang » chieu sang, nhieu tang, hieu van
trung cap » truong cao, trung tam
tong dong » trong dong, tuong dong, cong dong
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (hieu quang)) - thanh trung cap ((tong dong) OR (thong dong)) van thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - thanh trung cap ((tong dong) OR (thong dong)) van thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (hieu quang)) - thanh trung cap ((tong dong) OR (thong dong)) van thanh cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu quang)) - thanh trung cap ((tong dong) OR (thong dong)) van thanh cau*.