Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
van thanh » ban thanh, van tuan
kho tang » cao tang
cua tre » cua te, cuu tre, cua triet
hai cua » thai cua, dai cua, hoi cua
luc van » luoc van, luu van, duc van
cac luc » cau luc, coc luc, cac nuoc
qua cac » cua cac
ky tang » ky nang, ky dang, ky trong
su can » su van, su cao, tu can
su cac » tu cac, su cao, eu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cac) OR (su can)) ((ky tang) or (kho tang)) xa hoi. hieu qua cac luc van thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su can)) ((ky tang) OR (kho tang)) xa hoi. hieu qua cac luc van thanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) OR (su can)) ((ky tang) or (kho tang)) xa hoi. hieu qua cac luc van thanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su cac) OR (su can)) ((ky tang) or (kho tang)) xa hoi. hieu qua cac luc van thanh hai cua tre*.