Perhaps you should try some spelling variations:
thanh sinh » thanh binh, thanh tinh, thanh vinh
sinh cua » manh cua, dinh cuu, sinh va
luat tuc » luat thue
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
lam tuc » lam thuoc, lam truoc, nam thuc
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, v nang, may nang
x hoi » xa hoi, o hoi, x ho

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) or (ly nang)) x hoi. hieu van ((lam tuc) OR (luat tuc)) gia thanh sinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ly nang)) x hoi. hieu van ((lam tuc) OR (luat tuc)) gia thanh sinh cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (ly nang)) x hoi. hieu van ((lam tuc) OR (luat tuc)) gia thanh sinh cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ly nang)) x hoi. hieu van ((lam tuc) OR (luat tuc)) gia thanh sinh cua tre*.