Perhaps you should try some spelling variations:
dang thanh » dong thanh, dang hanh, hoang thanh
thuc dang » thuoc dang, thuc dan, thuc dung
nham thuc » nhan thuc, nam thuc, nham thu
cong cua » cong cu, dong cua, huong cua
so sach » so sanh, bo sach, co sach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve nham » ve nha, ve cham
co cua » con cua, ca cua, cuoi cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (te sach)) ky nang xa hoi. hieu ve nham thuc dang thanh ((co cua) OR (cong cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (te sach)) ky nang xa hoi. hieu ve nham thuc dang thanh ((co cua) OR (cong cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (te sach)) ky nang xa hoi. hieu ve nham thuc dang thanh ((co cua) OR (cong cua)) tre*.