Perhaps you should try some spelling variations:
thanh dan » thanh san, thanh van, thanh dat
sach thu » sach thue, sach thieu, sach tham
va thanh » gia thanh, ban thanh, va tinh
cham xuc » cam xuc, chat xuc, cham soc
dan cuu » dan cu, dan cua, dan luu
va cham » va chat, va tham
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, xach tay
xuc va » duc va, tuc va, luc va
o hoi » co hoi, o hoc, o hai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach thu)) nang ((xa hoi) OR (o hoi)). hieu va cham xuc va thanh dan cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) OR (sach thu)) nang ((xa hoi) or (o hoi)). hieu va cham xuc va thanh dan cuu tre~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) OR (sach thu)) nang ((xa hoi) or (o hoi)). hieu va cham xuc va thanh dan cuu tre*.