Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu quang » thieu quang, hieu quan, hieu qua
cua nhung » va nhung
van manh » van minh, van anh, van hanh
manh cua » doanh cua, ban cua
cong van » cong vang, cong san, song van
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau
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 quang - van manh cua nhung cong van ((phan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quang - van manh cua nhung cong van ((phan cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - van manh cua nhung cong van ((phan cau) or (phan dau))*.