Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
thuc cach » thuoc sach, truoc cach, thuc hanh
cach hoan » cac khoan, hach toan, sach han
doi trong » doi tuong, dot trong, dong trong
khoa phau » hoa phan, khoa kham, khoa than
cach tri » cach thoi, cac tro, cach noi
tri thuc » tri tue
hoan doi » hoa doi, hoat doi, hoang dai
sach tai » sach bai, sach tham, sach dao
tai thuc » thai thuc, dai thuc, thi thuc
thuc cac » tuc cac, phuc cac, thac cac
cac khoa » cac khoan, cac khoi, dac khoa
tu cach » tu cac
tu sach » thu sach, su sach, te sach

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 tri thuc cach hoan doi trong ) or ( tu sach tai thuc cac khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach tri thuc cach hoan doi trong ) OR ( tu sach tai thuc cac khoa phau thong ))*.