Perhaps you should try some spelling variations:
doan dien » toan dien, doan dieu, doan thien
dien cua » dieu cua, dien cuc, dien cu
te sach » toc sach
tai hoi » tai khoi, dai hoi, tai hoe
tai hai » thi hai, dai hai, tai ha
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va doan » va doanh, van doan, va dan
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach v nang ((tai hoi) or (tai hai)). hieu vu cham soc va doan dien cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang ((tai hoi) OR (tai hai)). hieu vu cham soc va doan dien cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach v nang ((tai hoi) or (tai hai)). hieu vu cham soc va doan dien cua tre*.