Perhaps you should try some spelling variations:
than thong » than thuong, toan thong, tran thong
thuoc dang » thuoc dung, thuoc khang, thuc dan
phau thong » phap thong, khau thong, phan thong
ban thuoc » dang thuoc, cay thuoc, nam thuoc
dang khoa » dung khoa, hang khoa, dang khoi
khoa than » khoa luan, hoa thai, hoa tan
nuoc sach » nguoi sach, hoc sach, cuoc cach
sach khoa » bach khoa, sach nha, anh khoa
khoa phau » hoa phan, khoa kham, khoa thu
thu can » thu canh, thuc can, thu ban
can ban » van ban, toan ban
su sach » so sach, vu sach
sach xa » sach dao, sach nha, sach bai
xa nuoc » va nuoc, xa ngoc, xuat nuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu can ban thuoc dang khoa than thong ) or ( su sach xa nuoc sach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu can ban thuoc dang khoa than thong ) OR ( su sach xa nuoc sach khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu can ban thuoc dang khoa than thong ) or ( su sach xa nuoc sach khoa phau thong ))*.