Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh vai » thanh hai, thanh van, thanh tai
tay dang » tay dong, tay dung, tay lang
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
sach tay » xach tay, sach hay, sach nay
tu sach » thu sach, su sach, te sach
cam duc » cam xuc, cao duc, pham duc
van cam » van nam, van lam, van cau
duc ban » duc tan, duc van, dua ban
xay hoi » xa hoi, tay hoi, cay phoi
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 dang xay hoi. hieu van cam 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 dang xay hoi. hieu van cam duc ban ((thanh vai) OR (thanh phan)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tay dang xay hoi. hieu van cam duc ban ((thanh vai) or (thanh phan)) cua tre*.