Perhaps you should try some spelling variations:
ban thanh » ban hanh
hieu van » hieu va, thien van, lieu va
lam duoc » luat duoc, lam thuoc, tao duoc
ban hang » ngan hang
nam duoc » nam thuoc, da duoc, dat duoc
tu sach » thu sach, su sach, te sach
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma

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