Perhaps you should try some spelling variations:
giao thanh » gia thanh, gian thanh, giay thanh
nhieu viec » hieu viec, nhien viet
hieu vien » hieu hien, hieu viec, lieu vien
bach duoc » bach tuoc, sach duoc, ban duoc
duoc giao » nuoc giao, duc giao, duong giao
thanh tai » thanh hai, thanh toan, doanh tai
sach thu » sach thue, sach thieu, sach tham
thu tang » thu trang, thu thang, thu hang
tu sach » thu sach, su sach, te sach
tang xa » trang xa, tang ma, lang xa
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thu tang xa hoi. ((hieu vien) or (nhieu viec)) bach duoc giao thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu tang xa hoi. ((hieu vien) OR (nhieu viec)) bach duoc giao thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach thu tang xa hoi. ((hieu vien) or (nhieu viec)) bach duoc giao thanh tai cua tre*.