Perhaps you should try some spelling variations:
phau xuong » phan xuong, khac xuong, phap vuong
tri thuoc » tri hoc, tin thuoc
thuoc coc » thuoc co, thuoc cuc, thuoc cong
coc khoan » cac khoan, hoc khoa, con khoa
khoa phau » hoa phan, khoa kham, khoa than
cach tri » cach thoi, cac tro, cach noi
khoan he » khoa he, khoan ke, khoan le
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
tu cach » tu cac
te sach » toc 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 thuoc coc khoan he thong ) or ( te sach tri thuc anh khoa phau xuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach tri thuoc coc khoan he thong ) OR ( te sach tri thuc anh khoa phau xuong ))*.