Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
thien van » thi van
ban thanh » ban hanh, ban hang
hieu van » hieu va, lieu va, hieu ve
tu sach » thu sach, su sach, te sach
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cua triet, dua tren
lam duc » lam duoc, pham duc, nam duoc
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

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

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