Perhaps you should try some spelling variations:
su sach » vu sach
hanh de » hanh ve, hanh kem
hanh di » hanh vi, hang di, danh di
dau tuc » dau tu, dao tuc, cau truc
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
cuu tre » cua tre, cau tren, cau treo
va dau » va dao
tuc va » thuc va, truc va, tuc xa

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)) ty lang xa hoi. lieu va dau tuc va ((hanh di) or (hanh de)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty lang xa hoi. lieu va dau tuc va ((hanh di) OR (hanh de)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty lang xa hoi. lieu va dau tuc va ((hanh di) or (hanh de)) cuu tre*".