Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan huong » xuan huong, quan duong, quan vuong
cong thanh » dong thanh, cong trinh, cong tan
tieu sach » chieu sach, dien sach, te sach
cong san » cong tac
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - hanh trinh quan huong ((cong thanh) or (cong san)) tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh trinh quan huong ((cong thanh) OR (cong san)) tran cau*.