Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
hien sach » dien sach, kien sach, thien hach
dang cong » dung cong
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
phan cau » phan dau, phan cac, phan tu
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - ((hanh trinh) or (canh tranh)) va dang cong doan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - ((hanh trinh) OR (canh tranh)) va dang cong doan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - ((hanh trinh) or (canh tranh)) va dang cong doan phan cau*.