Perhaps you should try some spelling variations:
bach khuan » bach khoa, bach khang, bach xuan
phan thong » phan thuong, phan hong, phan tong
truc hanh » thuc hanh, tuc hanh, thuc thanh
khuan hoa » khuan khoa, chuan hoa, nhuan khoa
hoa thong » hoa trong, hoa khong, hoa thon
cach tri » cach thoi, cac tro, cach noi
tri truc » tri thuc, thi truc, tri thuoc
hanh hoa » thanh hoa, khanh hoa, hang hoa
hoa phan » hoa dan, co phan
sach thu » sach thue, sach thieu, sach tham
tuc bach » truc bach, trac bach, tuc cac
tu cach » tu cac
su sach » so sach, vu 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 truc hanh hoa phan thong ) or ( su sach thu tuc bach khuan hoa thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach tri truc hanh hoa phan thong ) OR ( su sach thu tuc bach khuan hoa thong ))*.