Perhaps you should try some spelling variations:
kham thong » khap thong, khau thong, pham thuong
thuoc tinh » thuc tinh, thuoc sinh, thuoc hinh
nhan trong » nhuan trong, nhat trong, nhin trong
dan thuoc » dang thuoc, dan thuc, ban thuoc
khoa kham » kho khan, khoa than
tinh cac » tinh cach, trinh cac, tich cac
cac khoa » cac khoan, cac khoi, dac khoa
cach tri » cach thoi, cac tro, cach noi
hoc sach » hoc sinh, hoc cac, hoc anh
sach kho » bach khoa, sach dao, sach nha
kho nhan » kho khan, cho nhan, khi nhan
thu dan » thuc dan, thu dang, thu ban
tu cach » tu cac
tri hoc » triet hoc, tri thuc, thai hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu dan thuoc tinh cac khoa kham thong ) or ( tu cach tri hoc sach kho nhan trong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu dan thuoc tinh cac khoa kham thong ) OR ( tu cach tri hoc sach kho nhan trong )).
• Adding a wildcard symbol may retrieve word variants: (( thu dan thuoc tinh cac khoa kham thong ) or ( tu cach tri hoc sach kho nhan trong ))*.