Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, nhung don
hoc chinh » hoan chinh, hoc sinh, hoc kinh
trung cap » truong cao, trung tam
hang cong » dang cong, hang nong, bang cong
hoang hao » hoang thao, hoang hai, hoan hao
hang cao » hoang cao, nang cao, hang ca

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 - thanh trung cap ((nhung cong) or (hang cong)) ban ((hang cao) or (hoang hao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - thanh trung cap ((nhung cong) OR (hang cong)) ban ((hang cao) OR (hoang hao)).
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - thanh trung cap ((nhung cong) or (hang cong)) ban ((hang cao) or (hoang hao))*.