Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
dau tuc » dau tu, dao tuc, cau truc
hanh di » hanh vi, hanh de, danh di
hang di » hang doi, hang vi, hang dien
va dau » va dao
tuc va » thuc va, truc va, tuc xa

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