Perhaps you should try some spelling variations:
bach duoc » bach tuoc, sach duoc, ban duoc
hieu vien » hieu hien, hieu viec, thieu nien
duoc gia » duoc giao, quoc gia, duc gia
thanh vi » hanh vi, thanh ve, nhanh vi
thanh va » thanh van, hanh va, thanh ha
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang x hoi. hieu vien bach duoc gia ((thanh vi) or (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu vien bach duoc gia ((thanh vi) OR (thanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu vien bach duoc gia ((thanh vi) or (thanh va)) cua tre*.