Perhaps you should try some spelling variations:
hang chinh » hanh chinh, hoan chinh
khong cong » thong cong, khong cang, chong cong
hieu sach » chieu sach, hieu cac, hieu sau
hieu cach » hieu cac, chieu sach, hieu ca
dien sach » dien anh
canh manh » lanh manh, canh tranh, cach mang
cua khong » hua khong, cua phuong, cua thuong
cong hang » cong thang, cong hung, cong lang
chinh can » chinh ca, chinh ban, chinh cau
manh cua » doanh cua, ban cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((((hieu sach) or (hieu cach))) or (dien sach)) - canh manh cua khong cong hang chinh can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((((hieu sach) OR (hieu cach))) OR (dien sach)) - canh manh cua khong cong hang chinh can.
• Adding a wildcard symbol may retrieve word variants: doc ((((hieu sach) or (hieu cach))) or (dien sach)) - canh manh cua khong cong hang chinh can*.