Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
toc sach » hoc sach, doc sach, thuoc sach
thai cua » than cua, tai cuc, tri cua
nang xa » nang x, lang xa, nang ma
cac xuc » cam xuc, cac nuoc, chat xuc
van han » van hanh, van phan, van nhan
cua tre » cua te, cuu tre, cua triet
va han » va phan, va hanh, va hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (toc sach)) ky nang xa hoi. lieu va cac xuc ((va han) OR (van han)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (toc sach)) ky nang xa hoi. lieu va cac xuc ((va han) OR (van han)) thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (toc sach)) ky nang xa hoi. lieu va cac xuc ((va han) OR (van han)) thai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (toc sach)) ky nang xa hoi. lieu va cac xuc ((va han) OR (van han)) thai cua tre*.