Perhaps you should try some spelling variations:
than xuong » phan xuong, than uong, thanh huong
thuoc dang » thuoc dung, thuoc khang, thuc dan
sach tranh » canh tranh
dao thuoc » cao thuoc, tao thuoc, dang thuoc
dang khoa » dung khoa, hang khoa, dang khoi
khoa than » khoa luan, hoa thai, hoa tan
tranh hoc » thanh hoc, tranh cuoc, tranh duoc
hoa thong » hoa trong, hoa khong, hoa thon
sach dao » lanh dao
tu sach » thu sach, su sach, tu cach
te sach » toc sach
hoc cac » hoc cao
nha hoa » nha khoa, nhan hoa, nhat hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach dao thuoc dang khoa than xuong ) or ( te sach tranh hoc cac nha hoa thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach dao thuoc dang khoa than xuong ) OR ( te sach tranh hoc cac nha hoa thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach dao thuoc dang khoa than xuong ) or ( te sach tranh hoc cac nha hoa thong ))*.