Perhaps you should try some spelling variations:
thang hai » thanh hai, thong hai, thanh hoai
hang hai » hoang hai, hang tai, thanh hai
cua tre » cua te, cuu tre, cua triet
duc ban » duc tan, duc van, dua ban
van cam » van lam, van cau, van dam
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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 hoi. hieu ((van cam) OR (van nam)) duc ban ((hang hai) OR (thang hai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang xa hoi. hieu ((van cam) OR (van nam)) duc ban ((hang hai) or (thang hai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang xa hoi. hieu ((van cam) OR (van nam)) duc ban ((hang hai) or (thang hai)) cua tre*.