Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
chat tuc » chat xuc, luat tuc, chat huu
van chat » cao chat
hieu van » hieu va, thien van, lieu va
so sach » so sanh, co sach, hoc sach
san cuu » san cua, san huu, song cuu
tuc ban » thuc ban, truc ban, tu ban
cuu tre » cua tre, cau tren, cau treo
ty nang » ky nang, ty hang, ly nang
bo sach » co sach, hoc sach
co hoi » co hoc, co loi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (bo sach)) ((ty nang) or (ty xang)) co hoi. hieu van chat tuc ban thanh san cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ((ty nang) OR (ty xang)) co hoi. hieu van chat tuc ban thanh san cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ((ty nang) or (ty xang)) co hoi. hieu van chat tuc ban thanh san cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ((ty nang) or (ty xang)) co hoi. hieu van chat tuc ban thanh san cuu tre*.