Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
hieu vien » hieu hien, thieu nien, hieu tieng
thu sach » tu sach, thuat sach, thuoc sach
danh doi » danh di, thanh doi, dung doi
doi cua » dai cua, hoi cua
va danh » va dinh, va dan, va hanh
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
xuc va » duc va, tuc va, luc va

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: thu sach ((ky tang) OR (ky dang)) xa hoi. ((hieu vien) OR (hieu viec)) cac xuc va danh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ky tang) or (ky dang)) xa hoi. ((hieu vien) OR (hieu viec)) cac xuc va danh doi cua tre~".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky tang) or (ky dang)) xa hoi. ((hieu vien) OR (hieu viec)) cac xuc va danh doi cua tre*.