Perhaps you should try some spelling variations:
su sach » vu sach
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
dau tuc » dau tu, dao tuc, cau truc
dang ha » dong ha, dung ha, lang ha
dang xa » dang xay, lang xa, dang va
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
va dau » va dao
tuc va » thuc va, truc va, tuc xa
va cua » va chua, via cua, ca cua

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) or (so sach)) ky ((dang xa) OR (dang ha)) hoi. lieu va dau tuc va hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky ((dang xa) OR (dang ha)) hoi. lieu va dau tuc va hanh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky ((dang xa) OR (dang ha)) hoi. lieu va dau tuc va hanh va cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky ((dang xa) OR (dang ha)) hoi. lieu va dau tuc va hanh va cua tre*.