Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
thuc cach » thuoc sach, truoc cach, thuc hanh
thuc bach » truc bach, thuoc sach, thuc hanh
khoa phau » hoa phan, khoa kham, khoa than
thu sach » tu sach, thuat sach, thuoc sach
sach tri » sach tai, sach tren, sach truc

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach tri ((thuc bach) OR (thuc cach)) khoa phau thong~".
• Adding a wildcard symbol may retrieve word variants: thu sach tri ((thuc bach) OR (thuc cach)) khoa phau thong*.