Perhaps you should try some spelling variations:
thanh trung » thanh tung
luat chung » luan chung, luat thuong, luat cong
doi chieu » doi chi, ho chieu, mot chieu
cua chung » cua nhung, luan chung, cua cong
thong ban » thong van, trong ban, thong bai
ban thanh » ban hanh, ban hang
thanh cau » thanh chau, thanh mau, nhanh cau
doc hieu » toc thieu, hoc thieu, hoc hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (doc hieu)) sach - thanh trung ((cua chung) or (luat chung)) thong ban thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - thanh trung ((cua chung) OR (luat chung)) thong ban thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sach - thanh trung ((cua chung) or (luat chung)) thong ban thanh cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) sach - thanh trung ((cua chung) or (luat chung)) thong ban thanh cau*.