Perhaps you should try some spelling variations:
thanh trung » thanh tung
tang trong » tang truong, thang trong, lang trong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
trung cao » truong cao, trung cap, trung co
trong van » trong cac
cao tang » cao dang
ban can » ban dan, ban hang, ban hanh

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 cao tang trong van ban can~.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - thanh trung cao tang trong van ban can*.