Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
cac tuc » cac toc, cac tu, cac nuoc
cac tac » cac toc, cac bac, cac dac
hang di » hang doi, hang dien, hang dich
hang vi » hang va, hanh vi, khang voi
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang xa hoi. lieu va ((cac tuc) OR (cac tac)) van ((hang di) or (hang vi)) su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. lieu va ((cac tuc) OR (cac tac)) van ((hang di) OR (hang vi)) su tien*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang xa hoi. lieu va ((cac tuc) OR (cac tac)) van ((hang di) or (hang vi)) su tien*".