Perhaps you should try some spelling variations:
dinh thai » dinh thi, sinh thai, tinh thai
thuoc va » thuoc ma, thuong va, thuoc tai
thai cua » than cua, tai cuc, tri cua
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
bo sach » co sach, hoc sach
cua tre » cua te, cuu tre, cua triet
va nam » van nam, ha nam, va nay
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (bo sach)) ky nang x hoi. hieu va nam ((thuoc va) OR (thuc va)) dinh thai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (bo sach)) ky nang x hoi. hieu va nam ((thuoc va) OR (thuc va)) dinh thai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (bo sach)) ky nang x hoi. hieu va nam ((thuoc va) OR (thuc va)) dinh thai cua tre*.