Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
duc dang » duc dung, duc bang, duc dan
duc dong » duoc dong, duc dung, duc cong
hieu van » hieu va, thien van, lieu va
tu cach » tu cac
vai cuu » vai cua
van bao » van ban, van dao
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) y nang x hoi. hieu van bao ((duc dang) OR (duc dong)) thanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) y nang x hoi. hieu van bao ((duc dang) OR (duc dong)) thanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) y nang x hoi. hieu van bao ((duc dang) OR (duc dong)) thanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) y nang x hoi. hieu van bao ((duc dang) OR (duc dong)) thanh vai cuu tre*.