Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong tan, truong thanh
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
tran ban » tranh ban, tran van, toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh tang cua nhung ((((cong thanh) OR (cong trinh))) OR (cong tac)) tran ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - hanh tang cua nhung ((((cong thanh) OR (cong trinh))) or (cong tac)) tran ban~".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh tang cua nhung ((((cong thanh) OR (cong trinh))) or (cong tac)) tran ban*.