Perhaps you should try some spelling variations:
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
tuc van » thuc van, truc van, tuc va
sach ty » sach y, sach thu, xach tay
dau tuc » dau tu, dao tuc, cau truc
nang xa » nang x, lang xa, nang ma
sach tu » sach thu, cach tu, sach uu
cuu tre » cua tre, cau tren, cau treo
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) OR (sach tu)) nang xa hoi. lieu va dau tuc van ((hanh di) or (hang di)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tu)) nang xa hoi. lieu va dau tuc van ((hanh di) OR (hang di)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach tu)) nang xa hoi. lieu va dau tuc van ((hanh di) or (hang di)) cuu tre*".