Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tat thanh » tai thanh, ta thanh, tat thang
vai cuu » vai cua
tuc tat » tuc tap, tuc hat, tuc tao
te sach » toc sach
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa

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

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