Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cac truc » cau truc, cac tru, cac trung
hang doi » hang loi, huong doi, hang tai
hang vi » hang va, hanh vi, khang voi
hang di » hang dien, hang dich, hang tai
truc va » thuc va, thuc vat, trung va
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma 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: su sach y nang ma hoi. hieu ve cac truc va ((((hang di) OR (hang doi))) OR (hang vi)) va triet~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu ve cac truc va ((((hang di) or (hang doi))) or (hang vi)) va triet*.