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 chat » cao chat
chat duc » chat xuc, chat doc, chet duoc
nang xa » nang x, lang xa, nang ma
duc ban » duc tan, duc van, dua ban
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sai ky) or (cac ky)) nang xa hoi. hieu van chat duc ban thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sai ky) OR (cac ky)) nang xa hoi. hieu van chat duc ban thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sai ky) or (cac ky)) nang xa hoi. hieu van chat duc ban thanh tai cua tre*.