Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
tien thuoc » trien thuoc, tin thuoc, bien thuoc
thuoc dang » thuoc dung, thuoc khang, thuc dan
khoa phau » hoa phan, khoa kham, khoa than
sach tien » sach tren, sach thieu
dang khoi » dung khoa, hang khoa
hoc trong » hoc thuong, hoc tieng, dot trong
bac khoa » bach khoa, dac khoa, ba khoa
khoi hoc » khoa hoc, hoi hoc, phoi hoc
nha hoc » nha thuoc, khoa hoc, nha nuoc
hoc bac » hoc bai, hoc cac, hoc mac
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 cac nha hoc bac khoa phau thong ) or ( tu sach tien thuoc dang khoi hoc trong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cac nha hoc bac khoa phau thong ) OR ( tu sach tien thuoc dang khoi hoc trong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cac nha hoc bac khoa phau thong ) or ( tu sach tien thuoc dang khoi hoc trong ))*.