Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
truc van » truc va, thuc van, truc ban
ky lang » ky nang, ky dang, tay lang
hanh ve » hanh vi, hanh va, hanh kem
ky tang » ky nang, ky dang, kho tang
hieu va » lieu va, hieu qua
hanh de » hanh kem
te sac » te sach, te cac, te san
ha hoi » hoa hoi, ha noi, xa hoi
va cau » van cau, va cac, va dau

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: te sac ((ky lang) OR (ky tang)) ha hoi. hieu va cau truc van ((hanh de) OR (hanh ve)) va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ((ky lang) OR (ky tang)) ha hoi. hieu va cau truc van ((hanh de) or (hanh ve)) va triet~".
• Adding a wildcard symbol may retrieve word variants: te sac ((ky lang) OR (ky tang)) ha hoi. hieu va cau truc van ((hanh de) or (hanh ve)) va triet*.