Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa
cuu tre » cua tre, cau tren, cau treo
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
dua ban » dia ban, cua ban, qua ban
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky tang xa hoi. hieu ve cham ((duc tan) or (dua ban)) ((thanh hai) or (thanh san)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky tang xa hoi. hieu ve cham ((duc tan) OR (dua ban)) ((thanh hai) OR (thanh san)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su xac ky tang xa hoi. hieu ve cham ((duc tan) or (dua ban)) ((thanh hai) or (thanh san)) cuu tre*.