Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
manh cua » doanh cua
cong van » cong vang, cong san, song van
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau
ho hieu » ho chieu, hoi hieu, nho hieu
ban cua » ban quan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh ((manh cua) OR (ban cua)) dung cong van ((phan cac) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - canh ((manh cua) or (ban cua)) dung cong van ((phan cac) OR (phan dau))~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh ((manh cua) or (ban cua)) dung cong van ((phan cac) OR (phan dau))*.