Perhaps you should try some spelling variations:
hanh trang » thanh trung, hanh trinh, minh trang
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
cua nhung » va nhung
cong san » cong tac
toan ban » van ban
tan ban » tang ban, van ban, can ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - ((hanh trang) OR (canh tranh)) cua nhung cong san ((tan ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - ((hanh trang) OR (canh tranh)) cua nhung cong san ((tan ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chinh sach - ((hanh trang) OR (canh tranh)) cua nhung cong san ((tan ban) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - ((hanh trang) OR (canh tranh)) cua nhung cong san ((tan ban) or (toan ban))*.