Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
thieu nien » thien nhien
thanh vai » thanh hai, thanh van, thanh tai
dung gia » dung giao, dung giam, dung giai
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
vai cua » dai cua, hai cua, lai 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 ty lang xa hoi. ((thieu nien) or (nhieu viec)) sach dung gia thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty lang xa hoi. ((thieu nien) OR (nhieu viec)) sach dung gia thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty lang xa hoi. ((thieu nien) or (nhieu viec)) sach dung gia thanh vai cua tre*.