Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh tai » thanh hai, thanh toan, doanh tai
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
xuc ban » duc ban, cuc ban, quoc ban
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
sac ky » sai ky
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: pu ((sac ky) or (cac ky)) nang o hoi. hieu van cam xuc ban thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: pu ((sac ky) OR (cac ky)) nang o hoi. hieu van cam xuc ban thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: pu ((sac ky) or (cac ky)) nang o hoi. hieu van cam xuc ban thanh tai cua tre*.