Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
khoa phau » hoa phan, khoa kham, khoa than
cham thuc » nham thuc, pham thuc, tham thuc
thuc cach » thuoc sach, truoc cach, thuc hanh
cach toan » hach toan, cach hoan, hoach toan
ban thong » ban trong, ban tuong, ban tong
sach tai » sach bai, sach tham, sach dao
tai thuc » thai thuc, tri thuc, dai thuc
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
toc cham » toc thai
toan ban » van ban
tu sach » thu sach, su sach, te sach
tu toc » tu hoc, tu goc, tu tot

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 tai thuc anh khoa phau thong ) or ( tu toc cham thuc cach toan ban thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tai thuc anh khoa phau thong ) OR ( tu toc cham thuc cach toan ban thong ))*.