Perhaps you should try some spelling variations:
nthanh tinh » nhanh tinh, thanh binh, thanh vinh
thanh tinh » thanh binh, nhanh tinh, than kinh
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
he nhieu » hop nhieu, phu nhieu, de hieu
cong san » cong tac
he dieu » hoc dieu
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((he nhieu) or (he dieu)) tang - ((thanh tinh) or (nthanh tinh)) cua thong cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((he nhieu) OR (he dieu)) tang - ((thanh tinh) OR (nthanh tinh)) cua thong cong san van ban.
• Adding a wildcard symbol may retrieve word variants: ((he nhieu) or (he dieu)) tang - ((thanh tinh) or (nthanh tinh)) cua thong cong san van ban*.