Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, cuoc cach, cuon sach
hoc sach » hoc sinh, hoc cac, hoc anh
danh sai » dung sai, danh bat, danh dau
hanh sai » hanh san, hanh tai, thanh san
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (nuoc sach)) ky dang xa hoi. hieu va cam xuc va ((hanh sai) OR (danh sai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (nuoc sach)) ky dang xa hoi. hieu va cam xuc va ((hanh sai) OR (danh sai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) or (nuoc sach)) ky dang xa hoi. hieu va cam xuc va ((hanh sai) OR (danh sai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (nuoc sach)) ky dang xa hoi. hieu va cam xuc va ((hanh sai) OR (danh sai)) cua tre*.