Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu van
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
tu sach » thu sach, te sach, tu cach
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di 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: ((tu sach) OR (su sach)) ky sang ma hoi. ((hieu ve) OR (hieu va)) cam xuc van hanh vi cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky sang ma hoi. ((hieu ve) OR (hieu va)) cam xuc van hanh vi cua vat~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky sang ma hoi. ((hieu ve) OR (hieu va)) cam xuc van hanh vi cua vat*.