Perhaps you should try some spelling variations:
phu thong » pho thong, phap thong, khau thong
thuc cach » thuoc sach, truoc cach, thuc hanh
bai thuoc » ban thuoc, bai hoc, cay thuoc
thuoc dac » thuoc dang, thuoc sach, thuc dan
dac khoan » cac khoan, dac khoa, dai khoang
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
cach hoa » cach hoan, cach hoc, bach hoa
sach bai » cac bai, sach xa
khoan he » khoa he, khoan ke, khoan le
tu sach » thu sach, su sach, te sach
hoa phu » khoa phu, hoa phi, hoi phu

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 thuc cach hoa phu thong ) or ( tu sach bai thuoc dac khoan he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach dao thuc cach hoa phu thong ) OR ( tu sach bai thuoc dac khoan he thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach dao thuc cach hoa phu thong ) or ( tu sach bai thuoc dac khoan he thong ))*.