Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thien danh » thien anh, thien dang, thien thanh
trinh nhan » trinh han, trinh phan, trinh nha
nhan quoc » han quoc, phan quoc, nhan cuoc
quoc hung » duc hung
hung cong » nhung cong, hung cuong, phung cong
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (thien danh)) - trinh nhan quoc hung cong toan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (thien danh)) - trinh nhan quoc hung cong toan phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (thien danh)) - trinh nhan quoc hung cong toan phan cac*.