Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
thanh van » thanh san, thanh toan, thanh phan
trinh van » trinh han, trinh quan, trinh toan
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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 - canh ((thanh van) or (trinh van)) nhung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - canh ((thanh van) OR (trinh van)) nhung cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - canh ((thanh van) or (trinh van)) nhung cong dan chan cau*.