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

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