Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
sach kho » bach khoa, sach dao, sach kem
thanh va » thanh van, hanh va, thanh ha
tang xa » trang xa, tang ma, lang xa
xuc gia » duc gia, tuc gia, quoc gia
luc gia » luoc gia, duc gia, quoc gia
cuu tre » cua tre, cau tren, cau treo
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach kho) or (sach nha)) tang xa hoi. hieu vien bach ((xuc gia) OR (luc gia)) thanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kho) OR (sach nha)) tang xa hoi. hieu vien bach ((xuc gia) OR (luc gia)) thanh va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach kho) or (sach nha)) tang xa hoi. hieu vien bach ((xuc gia) OR (luc gia)) thanh va cuu tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach kho) or (sach nha)) tang xa hoi. hieu vien bach ((xuc gia) OR (luc gia)) thanh va cuu tre*.