Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
so sanh » do sanh
ky dinh » ky sinh, ky danh, ky kinh
dinh xa » dinh ba, dinh va, dinh xu
van lam » van nam
lam tuc » lam thuoc, lam truoc, luat tuc
va tinh » may tinh
tinh ve » trinh ve, tinh ven, dinh ve
vu sach » su sach, vu khach
tuc va » thuc va, truc va, tuc xa
ve cua » le cua, de cua, te cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((vu sach) OR (vu bach))) OR (so sanh)) ky dinh xa hoi. hieu van lam tuc va tinh ve cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((vu sach) OR (vu bach))) or (so sanh)) ky dinh xa hoi. hieu van lam tuc va tinh ve cua viet~".
• Adding a wildcard symbol may retrieve word variants: ((((vu sach) OR (vu bach))) or (so sanh)) ky dinh xa hoi. hieu van lam tuc va tinh ve cua viet*.