Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
cong thanh » dong thanh, cong trinh, cong tan
hoc chinh » hoan chinh, hoc sinh, hoc kinh
dung cong » dung trong
toan ban » van ban
va dung » van dung, va duong, vat dung

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 tranh) or (hanh trinh)) va dung cong thanh ((tran duc) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - ((hanh tranh) OR (hanh trinh)) va dung cong thanh ((tran duc) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - ((hanh tranh) or (hanh trinh)) va dung cong thanh ((tran duc) or (toan ban))*.