Perhaps you should try some spelling variations:
thieu nien » thien nhien
lang hai » lang chai, lang thai, lang ha
cac loai » cac bai, cac giai, cac dai
nien cac » vien cac, dien cac, bien cac
hai cua » thai cua, dai cua, hoi cua
va lang » va nang, hoa lang
loai va » loai nam
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
su 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) OR (so sach)))) ky nang xa hoi. thieu nien cac loai va lang hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((su sach) OR (so sach)))) ky nang xa hoi. thieu nien cac loai va lang hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (((su sach) OR (so sach)))) ky nang xa hoi. thieu nien cac loai va lang hai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((su sach) OR (so sach)))) ky nang xa hoi. thieu nien cac loai va lang hai cua tre*.