Perhaps you should try some spelling variations:
ban thanh » ban hanh
hieu van » hieu va, thien van, lieu va
ban hang » ngan hang
van cam » van nam, van lam, van cau
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
sac ky » sai ky
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: pu ((sac ky) or (cac ky)) nang x hoi. hieu van cam xuc ((ban thanh) OR (ban hang)) tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: pu ((sac ky) OR (cac ky)) nang x hoi. hieu van cam xuc ((ban thanh) OR (ban hang)) tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "pu ((sac ky) or (cac ky)) nang x hoi. hieu van cam xuc ((ban thanh) OR (ban hang)) tai cua tre".
• Adding a wildcard symbol may retrieve word variants: pu ((sac ky) or (cac ky)) nang x hoi. hieu van cam xuc ((ban thanh) OR (ban hang)) tai cua tre*.