Perhaps you should try some spelling variations:
thieu nien » thien nhien
thanh hai » thanh phan, thanh hoa, thanh san
cac giao » cach giao, cac giai, ca giao
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, te sach, tu cach
hai cua » thai cua, dai cua, hoi cua
cac lao » ca lao, cac loai, cac lang
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
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) or (su sach)) ky nang xa hoi. thieu nien ((cac lao) or (cac giao)) va thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. thieu nien ((cac lao) OR (cac giao)) va thanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang xa hoi. thieu nien ((cac lao) or (cac giao)) va thanh hai cua tre*.