Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh vai » thanh hai, thanh van, thanh tai
sach tay » xach tay, sach hay, sach nay
tay lang » tai lang, tay tang, tay quang
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
van cao » van dao, van bao, van hao
cao duc » dao duc, cao suc, giao duc
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet

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

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