Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
van thanh » ban thanh, van tuan
thanh cao » thanh ca, thanh cac, thanh thao
hoi hieu » hoi phieu, hoi tieu, moi hieu
mang vua » mang va, hang va, bang va
trang va » tran van, hang va
mang cua » manh cua, dung cua, ban cua
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: hoi hieu lang - hanh ((((mang vua) or (trang va))) or (mang cua)) nhung cong van thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - hanh ((((mang vua) OR (trang va))) OR (mang cua)) nhung cong van thanh cao.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - hanh ((((mang vua) or (trang va))) or (mang cua)) nhung cong van thanh cao*.