Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cha, thanh cham, thanh chu
doi chieu » doc hieu, doi chi, ho chieu
trung va » truong va, trang va, trung ha
cong san » cong tac
toan cao » toan ban, toan tap

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 (theo chieu)) sach - thanh trung va nhung cong san ((thanh chau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (theo chieu)) sach - thanh trung va nhung cong san ((thanh chau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (theo chieu)) sach - thanh trung va nhung cong san ((thanh chau) or (toan cao))*.