Perhaps you should try some spelling variations:
ngang thanh » nang thanh, nganh thanh, ngan thanh
thanh trung » thanh tung
cong ngang » cong nhan, cong quang, cong lang
hoc chinh » hoan chinh, hoc sinh, hoc kinh
trung cua » truong cua, trung tuan, trung cap
cong cong » cong dong, trong cong, dung cong
thanh ban » thanh san, thanh van, thanh bac

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 cua cong cong ngang thanh ban~.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - thanh trung cua cong cong ngang thanh ban*.