Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
thanh hai » thanh phan, thanh hoa
xuc danh » chuc danh, quoc danh, luoc danh
cac xuc » cam xuc, cac nuoc, chat xuc
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may nang
ve cac » va cac, vien cac
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: tu sach ((y nang) OR (ly nang)) x hoi. hieu ve cac xuc danh ((thanh hai) OR (thanh san)) dau tieng~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (ly nang)) x hoi. hieu ve cac xuc danh ((thanh hai) OR (thanh san)) dau tieng~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ly nang)) x hoi. hieu ve cac xuc danh ((thanh hai) OR (thanh san)) dau tieng*.