Perhaps you should try some spelling variations:
xmang xa » lang xa, hoang xa, ang xa
su sach » so sach, vu sach
mang xa » lang xa, mang may, dang xay
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
di cuu » di cau, di cua, dinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((xmang xa) or (mang xa)) hoi. hieu ((van cac) OR (van bac)) duc va hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((xmang xa) OR (mang xa)) hoi. hieu ((van cac) OR (van bac)) duc va hanh di cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((xmang xa) or (mang xa)) hoi. hieu ((van cac) OR (van bac)) duc va hanh di cuu tre*".