Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach
vu sach » vu bach, vu khach
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve coc » ve cuoc, ve cac, ve co
luc va » duc va, tuc va, loc va

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 sach) OR (vu sach)) ((ky lang) OR (ky nang)) xa hoi. hieu ve coc luc va thanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ((ky lang) or (ky nang)) xa hoi. hieu ve coc luc va thanh dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ((ky lang) or (ky nang)) xa hoi. hieu ve coc luc va thanh dai cua tre*.