Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
sach nang » cach mang, sach dung, sach danh
nang thuc » dang thuoc, nhanh thuc, trang thuc
phu thong » pho thong, phap thong, khau thong
khoa phau » hoa phan, khoa kham, khoa than
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
khoa phu » khoa thu, hoa phu, khoe phu
danh tam » danh nam, dinh tam, canh tam
tam thuc » tham thuc, am thuc, nam thuc
so sach » so sanh, bo sach, co sach
so danh » do danh, so sanh, so dan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach nang thuc anh khoa phu thong ) OR ( so danh tam thuc anh khoa phau thong ))~.
• Adding a wildcard symbol may retrieve word variants: (( so sach nang thuc anh khoa phu thong ) or ( so danh tam thuc anh khoa phau thong ))*.