Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
than thong » than thuong, toan thong, tran thong
hoat phan » hoa phan, thuat phan, hoc phan
phan cong » thanh cong
sach tham » sach nha
sach khoa » bach khoa, sach nha, anh khoa
khoa than » khoa luan, hoa thai, hoa tan
thu lanh » thu canh, thi lanh, thu anh
dao thuc » dan thuc, dao tuc, do thuc
thuc cac » thuc cach, tuc cac, phuc cac
cac hoat » cao hoat, cac khoan, cac thuat
thu sach » tu sach, thuat sach, thu hoach

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

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