Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
bai thuoc » ban thuoc, bai hoc, cay thuoc
thuoc dac » thuoc dang, thuoc sach, thuc dan
noi thong » noi khong, noi tong, hoi thong
khoa phau » hoa phan, khoa kham, khoa than
cac khoa » cac khoan, cac khoi, dac khoa
dac khop » dac khoa, da khoa, cac hop
khop noi » khoa noi, khoi noi, hoc noi
sach bai » sach dao, cac bai, sach xa
tu sach » thu sach, su sach, te sach
so sach » so sanh, bo sach, co sach
xa tu » va tu, ba tu, da tu
a tu » va tu, ba tu, da tu

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 bai thuoc dac khop noi thong ) or ( so sach ((xa tu) OR (a tu)) cac khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach bai thuoc dac khop noi thong ) OR ( so sach ((xa tu) OR (a tu)) cac khoa phau thong ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach bai thuoc dac khop noi thong ) or ( so sach ((xa tu) OR (a tu)) cac khoa phau thong ))*".