Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thien hach » thien thanh, hien hanh
hien sach » kien sach, chieu sach, vien bach
dien sach » dien anh
chinh va » chinh ta, chinh tai, hanh va
cong dan » cong san, cong tan, huong dan
gian cac » gian dan, gian cua

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) or (dien sach))) or (thien hach)) - hanh chinh va nhung cong dan gian cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien sach) OR (dien sach))) OR (thien hach)) - hanh chinh va nhung cong dan gian cac.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien sach) or (dien sach))) or (thien hach)) - hanh chinh va nhung cong dan gian cac*.