Perhaps you should try some spelling variations:
thuoc day » thuc day, thuoc dac, thuoc dang
nam thuoc » nam thuc, nam thu, nha thuoc
vu khach » vu khanh, vu khac, vay khach
day hanh » day nhanh, day thanh, dao hanh
tang van » dang van, hoang van, trong van
dang xay » dang van, van xay
hieu ha » hieu hoa, hieu va, hieu ca
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 (su sach)) ky ((dang xay) or (tang van)) hoi. hieu ha nam thuoc day hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (su sach)) ky ((dang xay) OR (tang van)) hoi. hieu ha nam thuoc day hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (su sach)) ky ((dang xay) or (tang van)) hoi. hieu ha nam thuoc day hanh vi cua tre*.