Perhaps you should try some spelling variations:
than thong » than thuong, toan thong, tran thong
thuoc sach » hoc sach, nuoc sach, thuat sach
dao thuoc » cao thuoc, tao thuoc, dang thuoc
thuoc cac » thuoc cuc, thuoc cao, thuoc dac
khoa than » khoa luan, hoa thai, hoa tan
tai thuoc » tri thuoc, bai thuoc, tac thuoc
sach khoa » bach khoa, sach nha, anh khoa
phu thong » pho thong, phap thong, khau thong
cac khoa » cac khoan, cac khoi, dac khoa
sach tai » sach bai, sach tham, sach dao
khoa phu » khoa phau, khoa thu, hoa phu
tu lanh » tu hanh, tu lenh, tu manh
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu lanh dao thuoc cac khoa than thong ) or ( te sach tai thuoc sach khoa phu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu lanh dao thuoc cac khoa than thong ) OR ( te sach tai thuoc sach khoa phu thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu lanh dao thuoc cac khoa than thong ) or ( te sach tai thuoc sach khoa phu thong ))*.