Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu viec » nhieu viec, hieu ve, sieu viet
thanh van » thanh san, thanh toan, thanh phan
van thanh » ban thanh, van tuan
cua viet » ca viet, hoa viet, cua vat
van cua » vang cua, ban cua, dan cua
cac lop » cac hop, cac loai
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang
cac co » cac cong
x hoi » xa hoi, o hoi, x ho

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: thuat sach ((y nang) OR (v nang)) x hoi. hieu viec ((cac lop) OR (cac co)) van thanh van cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((y nang) OR (v nang)) x hoi. hieu viec ((cac lop) or (cac co)) van thanh van cua viet~".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((y nang) OR (v nang)) x hoi. hieu viec ((cac lop) or (cac co)) van thanh van cua viet*.