Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh di » thanh doi, thanh de, thanh do
sach ky » sach y, sach kem, sach hay
tuc van » thuc van, truc van, tuc va
dau tuc » dau tu, dao tuc, cau truc
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
sac ky » cac ky, sai ky
va dau » va dao
di cuu » di cau, di cua, dinh cuu

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