Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
thieu nien » thien nhien
hoc sach » hoc sinh, hoc cac, hoc anh
nien cac » vien cac, dien cac, bien cac
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cac luc » cau luc, coc luc, cac nuoc
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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 (((thuoc sach) OR (hoc sach)))) ky nang xa hoi. thieu nien cac luc va hanh vi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((thuoc sach) OR (hoc sach)))) ky nang xa hoi. thieu nien cac luc va hanh vi cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (((thuoc sach) OR (hoc sach)))) ky nang xa hoi. thieu nien cac luc va hanh vi cua cu".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((thuoc sach) OR (hoc sach)))) ky nang xa hoi. thieu nien cac luc va hanh vi cua cu*.