Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly vang » ly hang, ly van, ly quang
vang xa » lang xa, mang xa, ang xa
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
xa hanh » xa thanh, xa khanh, va hanh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo

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 ly vang xa hoi. hieu ((van cac) OR (van bac)) tuc xa hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly vang xa hoi. hieu ((van cac) OR (van bac)) tuc xa hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly vang xa hoi. hieu ((van cac) OR (van bac)) tuc xa hanh vi ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach ly vang xa hoi. hieu ((van cac) OR (van bac)) tuc xa hanh vi ((cua tre) or (cuu tre))*.