Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
vat dung » van dung, va dung, viet dung
dung sai » dung tai, dung va, dung dat
ve triet » va trien, su triet
te sach » toc sach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
van cam » van nam, van lam, van cau
xuc vat » thuc vat, xuat vat
cua tu » cua tuc, cua su, cua cu

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 sach ((ky lang) OR (ky tang)) xa hoi. hieu van cam xuc vat dung sai ((ve triet) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) OR (ky tang)) xa hoi. hieu van cam xuc vat dung sai ((ve triet) or (cua tu))~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) OR (ky tang)) xa hoi. hieu van cam xuc vat dung sai ((ve triet) or (cua tu))*.