Perhaps you should try some spelling variations:
thien van » thi van
thanh van » thanh san, thanh toan, thanh phan
thanh tai » thanh hai, thanh toan, doanh tai
nam duoc » nam thuoc, da duoc, dat duoc
su sach » so sach, vu sach
lam duc » lam duoc, pham duc, lam dung
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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