Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
truoc va » truong va, truoc bua, truoc dam
thuoc va » thuc va, thuoc ma, thuong va
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
sac ky » cac ky, sai ky
va lam » van lam, va lap
vi hoa » voi hoa, vi hoc, va hoa

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: thuat sac ky lang xa hoi. hieu va lam ((((truoc va) OR (thuoc va))) OR (truc va)) hanh vi hoa viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sac ky lang xa hoi. hieu va lam ((((truoc va) OR (thuoc va))) or (truc va)) hanh vi hoa viet~".
• Adding a wildcard symbol may retrieve word variants: thuat sac ky lang xa hoi. hieu va lam ((((truoc va) OR (thuoc va))) or (truc va)) hanh vi hoa viet*.