Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
tieu sach » chieu sach, dien sach, te sach
chua dong » ha dong, huy dong, hoa dong
cua dong » cua cong, cua dang, cua nong
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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 ((cua dong) or (chua dong)) cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh trinh ((cua dong) OR (chua dong)) cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh trinh ((cua dong) or (chua dong)) cong san phan cau*.