Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
hang hai » hoang hai, hang tai, hang va
kho tang » cao tang
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
xuc ban » duc ban, cuc ban, quoc ban
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
ky tang » ky nang, ky dang, ky trong
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky tang) or (kho tang)) xa hoi. hieu van cau xuc ban ((thanh hai) or (hang hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (kho tang)) xa hoi. hieu van cau xuc ban ((thanh hai) OR (hang hai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (kho tang)) xa hoi. hieu van cau xuc ban ((thanh hai) or (hang hai)) cua tre*.