Perhaps you should try some spelling variations:
thuc thanh » thuoc thanh, thuc hanh, phuc thanh
thuoc dang » thuoc dung, thuoc khang, thuc dan
thanh khoa » thanh hoa, thanh pho, hang khoa
phau thong » phap thong, khau thong, phan thong
dang khoa » dung khoa, hang khoa, dang khoi
phu thong » pho thong, phap thong, khau thong
cach thuc » anh thuc, cac thu
thuc thuc » hoc thuc
khoa phau » hoa phan, khoa kham, khoa than
tu thuoc » truc thuoc, tu thuong, cua thuoc
khoa phu » khoa thu, hoa phu, khoe phu
so sach » so sanh, bo sach, co sach
sach tu » sach thu, cach tu, sach ty
te cach » ve cach, te sach, tu cach

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 tu thuoc dang khoa phu thong ) or ( te cach thuc thuc thanh khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach tu thuoc dang khoa phu thong ) OR ( te cach thuc thuc thanh khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( so sach tu thuoc dang khoa phu thong ) or ( te cach thuc thuc thanh khoa phau thong ))*.