Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cua viet » ca viet, hoa viet, cua vat
van hau » van ha, van hai, van dau
hau tuc » cau truc, hieu tuc, thai tuc
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de 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 sac ky nang x hoi. hieu van hau tuc ((va hanh) or (va danh)) di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang x hoi. hieu van hau tuc ((va hanh) OR (va danh)) di cua viet*.