Perhaps you should try some spelling variations:
cuong cong » cong cong, luong cong, duong cong
hieu cach » hieu cac, chieu sach, hieu ca
san chinh » lan chinh, ban chinh, hanh chinh
van chinh » va chinh, lan chinh, van thinh
hoc hieu » hoc thieu, hoc hien, doc hieu
luong va » dung va
tung va » trung va, tuong va, dung va

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 cach - thanh ((tung va) or (luong va)) cuong cong ((san chinh) OR (van chinh)) chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cach - thanh ((tung va) OR (luong va)) cuong cong ((san chinh) OR (van chinh)) chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu cach - thanh ((tung va) or (luong va)) cuong cong ((san chinh) OR (van chinh)) chau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - thanh ((tung va) or (luong va)) cuong cong ((san chinh) OR (van chinh)) chau*.