Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh tai, hanh van
toan cau » toan cao, toan ban, toan tap
tu sach » thu sach, su sach, te sach
hanh va » hang va, hanh vi
xuc ban » duc ban, cuc ban, quoc ban
van hau » van ha, van hai, van dau
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 ma hoi. hieu ((toan cau) or (van hau)) xuc ban ((hanh vai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ma hoi. hieu ((toan cau) OR (van hau)) xuc ban ((hanh vai) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. hieu ((toan cau) or (van hau)) xuc ban ((hanh vai) or (hanh va)) cua tre*.