Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
khoa phau » hoa phan, khoa kham, khoa than
hoac tham » hoach thay, hoa thai, hoc thai
tham thuc » nham thuc, pham thuc, tam thuc
sanh tri » thanh tri, dinh tri, minh tri
tri thuc » tri tue
so sanh » do sanh
tu hoac » tu hoc, tu hoa, tu hoai

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sanh tri thuc cach khoa phau thong ) or ( tu hoac tham thuc cach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh tri thuc cach khoa phau thong ) OR ( tu hoac tham thuc cach khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( so sanh tri thuc cach khoa phau thong ) or ( tu hoac tham thuc cach khoa phau thong ))*.