Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thien van » thi van
dinh tri » chinh tri
ly hang » ly quang
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach ty
dinh vi » dinh ve, dinh viet, dinh thi
cuu tre » cua tre, cau tren, cau treo
va hoc » van hoc
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ly hang va hoc. ((hieu va) or (thien van)) cam xuc va ((dinh vi) or (dinh tri)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ly hang va hoc. ((hieu va) OR (thien van)) cam xuc va ((dinh vi) OR (dinh tri)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ly hang va hoc. ((hieu va) or (thien van)) cam xuc va ((dinh vi) or (dinh tri)) cuu tre*.