Perhaps you should try some spelling variations:
sach tham » sach nha
tham ang » tham lang, nham nang, pham hang
su sach » so sach, vu sach
hai cua » thai cua, dai cua, hoi cua
vai cua » dai cua, lai cua, bai cua
truc va » thuc va, thuc vat, trung va
hieu ve » hieu va, hieu van
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac
ang xa » lang xa, mang xa, dang xay

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: su sach tham ang xa hoi. hieu ve cac ((xuc va) OR (truc va)) hanh ((vai cua) OR (hai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tham ang xa hoi. hieu ve cac ((xuc va) or (truc va)) hanh ((vai cua) OR (hai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: su sach tham ang xa hoi. hieu ve cac ((xuc va) or (truc va)) hanh ((vai cua) OR (hai cua)) tre*.