Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thieu nien » thien nhien
hinh thai » sinh thai, tinh thai, dinh thi
nien cac » vien cac, dien cac, bien cac
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va hinh » va chinh, va kinh, va tinh
cua te » cua tu
du va » dau va, tu va, su va

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 (thuat sach)) ky nang xa hoi. thieu nien cac du va hinh thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (su sach))) OR (thuat sach)) ky nang xa hoi. thieu nien cac du va hinh thai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (su sach))) or (thuat sach)) ky nang xa hoi. thieu nien cac du va hinh thai cua te*".