Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
thuat lanh » thuat lap, thuat san
cach khoan » cac khoan, cach hoan, bach khoa
khoan phai » khong phai, khoa phau, khoan hoi
phai thong » phap thong, phai tuong, phan thong
hoc tieng » hoc hien
que cach » quyen cach, ve cach, tu cach
te sach » toc sach
nha hoc » nha thuoc, khoa hoc, nha nuoc
lanh xa » lang xa, lanh va, canh xa

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 tham thuoc sach nha hoc tieng ) or ( thuat lanh xa que cach khoan phai thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tham thuoc sach nha hoc tieng ) OR ( thuat lanh xa que cach khoan phai thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tham thuoc sach nha hoc tieng ) or ( thuat lanh xa que cach khoan phai thong ))*.