Perhaps you should try some spelling variations:
phan thuong » hang thuong, phan xuong
phau thong » phap thong, khau thong, phan thong
thuc cach » thuoc sach, truoc cach, thuc hanh
cach hoan » cac khoan, hach toan, sach han
hoan phan » hoa phan, toan phan, doan phan
thuc bach » truc bach, thuoc sach, thuc hanh
bach khoa » anh khoa
khoa phau » hoa phan, khoa kham, khoa than
cach tai » cac tai, cach ta, sach tai
tai thuc » thai thuc, tri thuc, dai thuc
thu sach » tu sach, thuat sach, thuoc sach
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
tu cach » tu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu cach tai thuc cach hoan phan thuong ) or ( thu sach dao thuc bach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach tai thuc cach hoan phan thuong ) OR ( thu sach dao thuc bach khoa phau thong ))*.