Perhaps you should try some spelling variations:
thuoc vat » thuc vat, thuoc va, thuoc bat
nam thuoc » nam thuc, nam thu, nha thuoc
vat dinh » va dinh, van dinh, vat sinh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
thi van » thi lan, thi hanh, thi nang
dinh vi » dinh ve, dinh viet, dinh tri
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 sach ky nang x ho. ((hieu ve) or (thi van)) nam thuoc vat dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x ho. ((hieu ve) OR (thi van)) nam thuoc vat dinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x ho. ((hieu ve) or (thi van)) nam thuoc vat dinh vi cua tre*.