Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, mot chieu
tung tham » tuong tham, tung pham, luong tham
cung tham » cung than, cung thang, luong tham
thanh van » thanh san, thanh toan, thanh phan
ho chieu » theo chieu, hoc thieu, mot chieu
van cau » van dau, van hau, van chat

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

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