Perhaps you should try some spelling variations:
thieu nien » thien nhien
thu sach » thuat sach, thuoc sach, thu hoach
nien cac » vien cac, dien cac, bien cac
cua viet » ca viet, hoa viet, cua vat
tu sach » su sach, te sach, tu cach
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
cac ban » cac dan, cac van, can ban
dan vai » dan va, dan tai, dan vat
vai cua » dai cua, hai cua, lai cua
va dan » ca dan, va dao, va dau

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: ((((tu sach) OR (thu sach))) OR (vu sach)) ky nang xa hoi. thieu nien cac ban va dan vai cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (thu sach))) or (vu sach)) ky nang xa hoi. thieu nien cac ban va dan vai cua viet~".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (thu sach))) or (vu sach)) ky nang xa hoi. thieu nien cac ban va dan vai cua viet*.