Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
van dinh » van minh, van dich, xuan dinh
thai cua » than cua, tai cuc, tri cua
va dinh » va kinh, va tinh, vu dinh
hai cua » dai cua, hoi cua, lai cua
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 cac ky nang x hoi. hieu van nam thuc ((va dinh) OR (van dinh)) ((hai cua) or (thai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang x hoi. hieu van nam thuc ((va dinh) OR (van dinh)) ((hai cua) OR (thai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang x hoi. hieu van nam thuc ((va dinh) OR (van dinh)) ((hai cua) or (thai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang x hoi. hieu van nam thuc ((va dinh) OR (van dinh)) ((hai cua) or (thai cua)) triet*.