Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
thuc dan » thuc hanh, hoc dan, thuc vat
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
va cham » va chat, va tham
ve cham » ve chat, vu cham, ve chim
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang o hoi. hieu ((ve cham) or (va cham)) thuc dan ((hanh vai) or (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang o hoi. hieu ((ve cham) OR (va cham)) thuc dan ((hanh vai) OR (hanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang o hoi. hieu ((ve cham) or (va cham)) thuc dan ((hanh vai) or (hanh tai)) cua tre*.