Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
su sach » vu sach
va cham » va chat, va tham
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
so sach » so sanh, bo sach, co sach
va cam » va cac, va cao, va cai
luc va » duc va, tuc va, loc va
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: ((su sach) or (so sach)) ky nang x hoi. hieu ((va cam) OR (va cham)) luc va thanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang x hoi. hieu ((va cam) OR (va cham)) luc va thanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky nang x hoi. hieu ((va cam) OR (va cham)) luc va thanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky nang x hoi. hieu ((va cam) OR (va cham)) luc va thanh vai cuu tre*.