Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
so sach » so sanh, bo sach, co sach
truc va » thuc va, thuc vat, trung va
vai cua » dai cua, hai cua, lai cua
dang xa » dang xay, lang xa, dang ha
thi van » thi lan, thi hanh, thi nang
cua tre » cua te, cuu tre, cua triet
sach 2 » sach y
xuc va » duc va, tuc va, luc va
2 dang » 2 danh, _ dang, b dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach 2 dang xa hoi. ((thien van) OR (thi van)) cam ((xuc va) or (truc va)) thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach 2 dang xa hoi. ((thien van) OR (thi van)) cam ((xuc va) OR (truc va)) thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach 2 dang xa hoi. ((thien van) OR (thi van)) cam ((xuc va) or (truc va)) thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach 2 dang xa hoi. ((thien van) OR (thi van)) cam ((xuc va) or (truc va)) thanh vai cua tre*.