Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va triet » va thiet, va trien, ve triet
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
nam tuc » nam thuc, nam truc, nam tu
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
tu ban » thu ban, te ban
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ((ky lang) OR (ky dang)) van hoa. hieu van nam tuc va hanh di ((va triet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ((ky lang) OR (ky dang)) van hoa. hieu van nam tuc va hanh di ((va triet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ((ky lang) OR (ky dang)) van hoa. hieu van nam tuc va hanh di ((va triet) or (cua vat))".
• Adding a wildcard symbol may retrieve word variants: tu ban ((ky lang) OR (ky dang)) van hoa. hieu van nam tuc va hanh di ((va triet) or (cua vat))*.