Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh hai » thanh hoa, thanh san
sach tay » xach tay, sach hay, sach nay
tay dang » tay dong, tay dung, tay lang
tu sach » thu sach, su sach, te sach
dang xa » dang xay, lang xa, dang ha
qua cam » qua cham, qua cac, qua ca
cam duc » cam xuc, cao duc, pham 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 dang xa hoi. hieu qua cam duc ban ((thanh hai) or (thanh phan)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tay dang xa hoi. hieu qua cam duc ban ((thanh hai) OR (thanh phan)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tay dang xa hoi. hieu qua cam duc ban ((thanh hai) or (thanh phan)) cua tre*.