Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va dat » va dao, va dau, va dap
anh vi » hanh vi, anh va, anh vu
anh ve » hanh ve, anh va, anh viet
5 hoi » o hoi
nuoc » quoc, duoc, ngoc

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 y nang ((5 hoi) or (x ho)). hieu va dat nuoc va ((anh vi) or (anh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((5 hoi) OR (x ho)). hieu va dat nuoc va ((anh vi) OR (anh ve)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((5 hoi) or (x ho)). hieu va dat nuoc va ((anh vi) or (anh ve)) cua tre*.