Perhaps you should try some spelling variations:
bien cac » vien cac, bien ca, hien cac
dien cac » vien cac, dien cuc, dien sach
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hoi cua » hoi chuc
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hien ((bien cac) OR (dien cac)) luc va thanh ((hoi cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hien ((bien cac) OR (dien cac)) luc va thanh ((hoi cua) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hien ((bien cac) OR (dien cac)) luc va thanh ((hoi cua) or (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hien ((bien cac) OR (dien cac)) luc va thanh ((hoi cua) or (dai cua)) triet*.