Perhaps you should try some spelling variations:
khoan phai » khong phai, khoa phau, khoan hoi
phai tuong » phan thuong, pham thuong, pham truong
thuc sach » thuoc sach, thu sach, thuc cach
sach tham » sach nha
dan thong » dan trong, ban thong, dan phong
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
thuc cac » thuc cach, tuc cac, phuc cac
bai thuc » bai thuoc, bao thuc, dai thuc
tham dan » ham dan, tam dan, tham dam
so sach » so sanh, bo sach, co sach
cau bai » cac bai, cap bai, mau bai
co cau » bo cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sach tri thuc cac khoan phai tuong ) or ( co cau bai thuc sach tham dan thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach tri thuc cac khoan phai tuong ) OR ( co cau bai thuc sach tham dan thong )).
• Adding a wildcard symbol may retrieve word variants: (( so sach tri thuc cac khoan phai tuong ) or ( co cau bai thuc sach tham dan thong ))*.