Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh hai » thanh phan, thanh hoa, thanh san
hieu van » hieu va, thien van, lieu va
kho tang » cao tang
xuc van » duc van, luc van, vuc van
cua tre » cuu tre, cua triet, dua tren
su sach » so sach, vu sach
van cam » van nam, van lam, van cau
ky tang » ky nang, ky dang, ky trong
cua te » cua tu

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

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