Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu nganh » vien nganh, hiem ngan, hieu manh
trung cua » truong cua, trung tuan, trung cap
cong tinh » cong vinh, long tinh, cong thanh
toc hieu » toc thieu, doc hieu, hoc thieu
cua dang » cua cong, cua ban
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu nganh - thanh trung cua dang ((cong tinh) or (cong trinh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu nganh - thanh trung cua dang ((cong tinh) OR (cong trinh)) toan cao*.