Perhaps you should try some spelling variations:
phan thong » phan thuong, phan hong, phan tong
thuc cach » thuoc sach, truoc cach, thuc hanh
sach khoa » bach khoa, sach nha, anh khoa
khoa phan » hoa phan, khoa than, khoa phau
xay thuc » cay thuc, day thuc, xa thuc
cach hoc » cach thuc, cach thoi, dich hoc
sanh dai » sinh dai, sanh dan, vanh dai
hoc sach » hoc sinh, hoc cac, hoc anh
hoc han » hoc phan, hoc hanh, hoc chan
so sanh » do sanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hoach xay thuc cach hoc han tong ) or ( so sanh dai hoc sach khoa phan thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach xay thuc cach hoc han tong ) OR ( so sanh dai hoc sach khoa phan thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach xay thuc cach hoc han tong ) or ( so sanh dai hoc sach khoa phan thong ))*.