Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
chat xuc » chat huu, cam xuc, chao xu
sach thi » sach thu, sach tai, sach thieu
xuc van » duc van, luc van, vuc van
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
hang ca » hang va, nang cao, hang tai
hang xa » hoang xa, hang va, lang xa
cuu tre » cua tre, cau tren, cau treo
anh vi » anh va, anh ve, anh vu

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: doc sach thi ((hang xa) OR (hang ca)) hoi. hieu va chat xuc van ((anh vi) OR (hanh vi)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach thi ((hang xa) or (hang ca)) hoi. hieu va chat xuc van ((anh vi) OR (hanh vi)) cuu tre~".
• Adding a wildcard symbol may retrieve word variants: doc sach thi ((hang xa) or (hang ca)) hoi. hieu va chat xuc van ((anh vi) OR (hanh vi)) cuu tre*.