Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
xuc va » duc va, tuc va, luc va
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) or (so sach)) ky nang x hoi. ((hieu van) or (hieu va)) cam xuc va hanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ky nang x hoi. ((hieu van) OR (hieu va)) cam xuc va hanh di cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ky nang x hoi. ((hieu van) or (hieu va)) cam xuc va hanh di cua viet*.