Perhaps you should try some spelling variations:
bach khuan » bach khoa, bach khang, bach xuan
kham thong » khap thong, khau thong, pham thuong
khoa thong » hoa thong, thoai thong, pho thong
thuc hang » thuc hanh, thu hang, phuc hang
hang khoa » dung khoa
khoa kham » kho khan, khoa than
sach thi » sach thu, sach tai, sach thieu
thi thuc » thai thuc, thi thu, thi thuy
sach tri » sach tai, sach tren, sach truc
tue bach » truc bach, thi bach, vu bach
vu sach » vu bach, vu khach
su sach » so sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu sach thi thuc hang khoa kham thong ) or ( su sach tri tue bach khuan khoa thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach thi thuc hang khoa kham thong ) OR ( su sach tri tue bach khuan khoa thong ))*.