Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
xuc van » duc van, luc van, vuc van
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
sai ky » sac ky
x hoi » xa hoi, o hoi, x ho
luan » quan, lan

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) or (sai ky)) nang x hoi. hieu ve cham ((xuc van) or (luan van)) hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach y) OR (sai ky)) nang x hoi. hieu ve cham ((xuc van) OR (luan van)) hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach y) or (sai ky)) nang x hoi. hieu ve cham ((xuc van) or (luan van)) hanh tai cua tre*.