Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu van » thien van, lieu va, hieu ve
cham tuc » nham thuc, pham thuc, tham thuc
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (cuoc cach)) ky lang xa hoi. ((hieu va) or (hieu van)) cham tuc va dinh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (cuoc cach)) ky lang xa hoi. ((hieu va) OR (hieu van)) cham tuc va dinh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (cuoc cach)) ky lang xa hoi. ((hieu va) or (hieu van)) cham tuc va dinh vi cua viet*.