Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dong doi » duong doi, dung doi, dong hoi
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
cam tuc » cam xuc, cam tu, nam thuc
xa dong » ha dong, van dong, lao dong
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. ((hieu ve) OR (hieu van)) cam tuc xa dong doi cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. ((hieu ve) OR (hieu van)) cam tuc xa dong doi cua tre*.