Perhaps you should try some spelling variations:
han thai » ban thai, van thai, than thoai
so sach » so sanh, bo sach, co sach
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
hang xa » hoang xa, hang va, hang ca
xuc va » duc va, luc va, xac va
y hang » ly hang, ty hang, yu hang
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao

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: so sach y hang xa hoi. hieu va cam ((xuc va) OR (tuc va)) ((han thai) OR (han tai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y hang xa hoi. hieu va cam ((xuc va) or (tuc va)) ((han thai) OR (han tai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sach y hang xa hoi. hieu va cam ((xuc va) or (tuc va)) ((han thai) OR (han tai)) cua tre*.