Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hanh, ban hang
thanh ban » thanh san, thanh van, thanh bac
nam duoc » nam thuoc, da duoc, dat duoc
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
lam duc » lam duoc, pham duc, lam dung
ban cua » ban quan
cua tre » cua te, cuu tre, cua triet

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 ky nang xa hoi. thien van ((lam duc) or (nam duoc)) ban thanh ban cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. thien van ((lam duc) OR (nam duoc)) ban thanh ban cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. thien van ((lam duc) or (nam duoc)) ban thanh ban cua tre*.