Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban danh » ban doanh, ban hanh, ban dan
cua tre » cua te, cuu tre, dua tren
danh di » danh du, xanh di, danh dien
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
so hai » son hai, su hai, so ha
va cam » va cham, va cac, va cao
o hai » co hai, o lai, _ hai

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 ky nang ((o hai) or (so hai)). lieu va cam cuc ban danh di ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((o hai) OR (so hai)). lieu va cam cuc ban danh di ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((o hai) or (so hai)). lieu va cam cuc ban danh di ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((o hai) or (so hai)). lieu va cam cuc ban danh di ((cua tre) OR (cua triet))*.