Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
hieu van » hieu va, thien van, lieu va
tran tap » toan tap, tran tan, tran tuan

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 van)) - thanh trung cap ((nhung cong) or (thong cong)) tan tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu van)) - thanh trung cap ((nhung cong) OR (thong cong)) tan tran tap.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu van)) - thanh trung cap ((nhung cong) or (thong cong)) tan tran tap*.