Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van cau » van hau, van chat, toan cau
van dau » van dao, phan dau
tuc van » thuc van, truc van, duc van
hanh di » hanh vi, hanh de, hang di
tuc va » thuc va, truc va, tuc xa
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 sach ky nang x hoi. hieu ((van cau) or (van dau)) ((tuc van) OR (tuc va)) hanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((van cau) OR (van dau)) ((tuc van) OR (tuc va)) hanh di cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ((van cau) or (van dau)) ((tuc van) OR (tuc va)) hanh di cua viet*".