Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
cham tuc » nham thuc, pham thuc, tham thuc
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
tuc ban » thuc ban, truc ban, tu ban
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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 y nang o hai. hieu va cham tuc ban thanh hai ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang o hai. hieu va cham tuc ban thanh hai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: so sach y nang o hai. hieu va cham tuc ban thanh hai ((cua tre) OR (cua triet))*.