Perhaps you should try some spelling variations:
khau thong » khau thuong, khap thong, khau tong
dao thuoc » cao thuoc, tao thuoc, dang thuoc
thuoc bao » thuoc bo, thuoc ban, thuoc bat
khoa khau » khoa kham, khoa phau, khoa chau
sach tao » sach bao, sach tai, sach tham
pha khau » nhap khau, phap khac, pham khac
sach dao » lanh dao
bao khoa » lao khoa, bao hoa, ba khoa
te sach » toc sach
tao thi » dao thi, cao thi, tao tai
thi ban » thi lan, tai ban, tri ban
ban pha » ban phap, ban nha, ban ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tao thi ban pha khau thong ) or ( te sach dao thuoc bao khoa khau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tao thi ban pha khau thong ) OR ( te sach dao thuoc bao khoa khau thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tao thi ban pha khau thong ) or ( te sach dao thuoc bao khoa khau thong ))*.