Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
cuu tre » cua tre, cau tren
hang di » hang doi, hang vi, hang dien
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
tuc van » thuc van, truc van, tuc va
dau tuc » dau tu, dao tuc, cau truc
xang xa » lang xa, mang xa, ang xa
hanh di » hanh vi, hanh de, danh di
va dau » va dao

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