Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
chieu sang » chieu sach, chieu xanh, hieu lang
chinh quan » chinh luan, chinh quyen, chinh ngan
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh van » thanh san, thanh toan, thanh phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (chieu sang)) - hanh chinh quan nhung cong thanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chieu sang)) - hanh chinh quan nhung cong thanh van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chieu sang)) - hanh chinh quan nhung cong thanh van ban*.