Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nam thuc » nam thuoc, am thuc, nam thu
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ly nang
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
ve nam » he nam, va nam, le nam
di cua » dai cua, doi cua, de 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 ((ty nang) or (ty hang)) ma hoi. hieu ve nam thuc va hanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty hang)) ma hoi. hieu ve nam thuc va hanh di cua viet.
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) or (ty hang)) ma hoi. hieu ve nam thuc va hanh di cua viet*.