Perhaps you should try some spelling variations:
hang doi » hang di, hang loi, huong doi
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
dau tuc » dau tu, dao tuc, cau truc
tuc van » thuc van, truc van, tuc va
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
ty ang » ty xang, ty hang, ty anh
ang xa » lang xa, mang xa, dang xay
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 ang xa hoi. lieu va dau tuc van ((hanh di) or (hang doi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ang xa hoi. lieu va dau tuc van ((hanh di) OR (hang doi)) cuu tre*.