Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
dau tuc » dau tu, dao tuc, cau truc
hanh di » hanh vi, hanh de, danh di
hang di » hang doi, hang vi, hang dien
cuu tre » cua tre, cau tren, cau treo
va dau » va dao
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. lieu va dau tuc va ((hanh di) or (hang di)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. lieu va dau tuc va ((hanh di) OR (hang di)) cuu tre*.