Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
cho duoc » che duoc, co duoc, cho cuoc
su sach » so sach, vu sach
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 y nang cao hoi. hieu va ((((cho duoc) or (tao duoc))) or (giao duc)) ban thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang cao hoi. hieu va ((((cho duoc) OR (tao duoc))) OR (giao duc)) ban thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang cao hoi. hieu va ((((cho duoc) or (tao duoc))) or (giao duc)) ban thanh vai cua tre*.