Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
dang thanh » dong thanh, dang hanh, hoang thanh
hien sach » dien sach, kien sach, thien hach
cua nhung » va nhung
canh ban » can ban, canh dan, canh van
san tran » tan tran, ban tran, dang tran
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - canh ban cua nhung cong ((san tran) or (dang thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - canh ban cua nhung cong ((san tran) OR (dang thanh)) cao*.