Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thai cuu » thai cua, tai cuc, thi cuc
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
van anh » tuan anh, van minh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
_ hai » _ tai, _ hao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang ((_ ha) or (_ hai)). hieu ve cac xuc ((van anh) OR (van thanh)) thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((_ ha) OR (_ hai)). hieu ve cac xuc ((van anh) OR (van thanh)) thai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((_ ha) or (_ hai)). hieu ve cac xuc ((van anh) OR (van thanh)) thai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((_ ha) or (_ hai)). hieu ve cac xuc ((van anh) OR (van thanh)) thai cuu tre*.