Perhaps you should try some spelling variations:
thieu nien » thien nhien
vu khach » vu khanh, vu khac, vay khach
nien cac » vien cac, dien cac, bien cac
lang hai » lang chai, lang thai, lang ha
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
cac tao » cau tao, cac tro, cac tac
va lang » va nang, hoa lang
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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) or (vu khach)))) ky nang x hoi. thieu nien cac tao va lang hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((su sach) OR (vu khach)))) ky nang x hoi. thieu nien cac tao va lang hai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((su sach) or (vu khach)))) ky nang x hoi. thieu nien cac tao va lang hai cua tre*.