Perhaps you should try some spelling variations:
thuoc ban » thuoc tan, thuoc dang, thu ban
cao thuoc » cay thuoc, cua thuoc, nam thuoc
vu khach » vu khanh, vu khac, vay khach
hanh tai » thanh tai, hang tai, han tai
ban hanh » ban hang
trang xa » trang va, trang ha, trong xa
thu sach » tu sach, thuat sach, thuoc sach
tang xa » tang ma, lang xa, tang ha
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu khach) or (thu sach)) ky ((tang xa) or (trang xa)) hoi. lieu va cao thuoc ban hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (thu sach)) ky ((tang xa) OR (trang xa)) hoi. lieu va cao thuoc ban hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (thu sach)) ky ((tang xa) or (trang xa)) hoi. lieu va cao thuoc ban hanh tai cua tre*.