Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
hang hang » nang hang, cang thang, hung thang
cua nhung » va nhung
giang van » dang van, gian dan, giang day
hoang van » hang va
hang cua » mang cua, hang ca, huong cua
cong dan » cong san, cong tan, huong dan

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