Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tung quan » tuong quan, trung quan, tong quan
dung quan » dung quang, dung luan, luong quan
hoc hieu » hoc thieu, hoc hien, doc hieu
van phu » van phung, van phan, van phat
san phu » san pham

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - thanh ((tung quan) OR (dung quan)) nhung cong ((van phu) or (san phu)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh ((tung quan) OR (dung quan)) nhung cong ((van phu) OR (san phu)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh ((tung quan) OR (dung quan)) nhung cong ((van phu) or (san phu)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh ((tung quan) OR (dung quan)) nhung cong ((van phu) or (san phu)) cau*.