Perhaps you should try some spelling variations:
thien van » thi van
thi hanh » thi thanh
lam duoc » nam duoc, luat duoc, lam thuoc
va thanh » ban thanh, va tinh, le thanh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
de cuu » de cua

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