Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
thanh phan » thanh pho, thanh san, thanh toan
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
trung ap » trung cap, trung lap, trung tam
cong van » cong vang, cong san, song van
ap dung » xay dung, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu van) or (hieu lang)) - hanh trung ap dung cong van thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu van) OR (hieu lang)) - hanh trung ap dung cong van thanh phan*.