Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
hoc chinh » hoan chinh, hoc sinh, hoc kinh
hanh manh » hanh mang, lanh manh, hoang manh
hang cong » dang cong, hang nong, bang cong
chinh can » chinh ca, chinh ban, chinh cau
manh cua » doanh cua, ban cua
cua hang » cua dang, cua nhung, cua cong

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 manh cua hang cong thanh ((chinh can) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - hanh manh cua hang cong thanh ((chinh can) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - hanh manh cua hang cong thanh ((chinh can) or (phan tu))*.