Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, tinh trang
minh trang » tinh trang, minh hoang, minh tuan
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
cua nhung » va nhung
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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: hoc chinh sach - ((((hanh trang) OR (minh trang))) or (thanh trung)) cua nhung cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - ((((hanh trang) OR (minh trang))) OR (thanh trung)) cua nhung cong van toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chinh sach - ((((hanh trang) OR (minh trang))) or (thanh trung)) cua nhung cong van toan cao*".