Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham xuc » chat xuc, cham soc, pham duc
dinh vi » dinh ve, dinh viet, dinh tri
danh vi » hanh vi, danh di, danh va
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang

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: toc sach o lang xa hoi. hieu va ((cham xuc) OR (cam xuc)) va ((danh vi) OR (dinh vi)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach o lang xa hoi. hieu va ((cham xuc) OR (cam xuc)) va ((danh vi) or (dinh vi)) cuu tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach o lang xa hoi. hieu va ((cham xuc) OR (cam xuc)) va ((danh vi) or (dinh vi)) cuu tre*.