Perhaps you should try some spelling variations:
tien thuoc » trien thuoc, tin thuoc, bien thuoc
cac nhanh » cach nhanh, cac nganh, cac nhan
sach tien » sach tren, sach thieu
thuoc anh » thuoc thanh, thuoc dang, thuoc sach
nhanh ha » thanh hoa, thanh hai, khanh hoa
ha trong » hoa trong, hai trong, hat trong
anh khoa » doanh khoa, hang khoa
he trung » le trung, he thong, do trung
hoc cac » hoc cao
tu sach » thu sach, su sach, te sach
khoa he » hoa he, khoa hoc, khong he
cac tu » cac thu, cach tu, cac du
tu hoc » te hoc

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 tu hoc cac nhanh ha trong ) or ( tu sach tien thuoc anh khoa he trung ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cac tu hoc cac nhanh ha trong ) OR ( tu sach tien thuoc anh khoa he trung )).
• Adding a wildcard symbol may retrieve word variants: (( tu cac tu hoc cac nhanh ha trong ) or ( tu sach tien thuoc anh khoa he trung ))*.