Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
phau thong » phap thong, khau thong, phan thong
thuc cach » truoc cach, thuc hanh, tuc cac
khoa phau » hoa phan, khoa kham, khoa than
sach tri » sach tai, sach tren, sach truc
tu sach » thu sach, su sach, te 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 sach tri ((thuc cach) OR (thuoc sach)) khoa phau thong~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tri ((thuc cach) OR (thuoc sach)) khoa phau thong".
• Adding a wildcard symbol may retrieve word variants: tu sach tri ((thuc cach) OR (thuoc sach)) khoa phau thong*.