Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa
hieu san » hieu van, hieu sau, chieu sang
tang xa » trang xa, tang ma, tang ha
lang xa » lang ha, dang xay, lang van
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
pham » phan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((tang xa) OR (lang xa)) hoi. hieu san pham duc ban ((thanh hai) OR (thanh san)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((tang xa) or (lang xa)) hoi. hieu san pham duc ban ((thanh hai) OR (thanh san)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((tang xa) or (lang xa)) hoi. hieu san pham duc ban ((thanh hai) OR (thanh san)) cua tre*.