Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
bach xuc » bach tuoc, bach xuan, bach hue
tu sach » thu sach, su sach, te sach
ty nang » ty xang, ty hang, ly nang
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua

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 ((ty nang) OR (ky nang)) xa hoi. hieu vien bach xuc ((va tinh) or (gia thanh)) va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ky nang)) xa hoi. hieu vien bach xuc ((va tinh) OR (gia thanh)) va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) OR (ky nang)) xa hoi. hieu vien bach xuc ((va tinh) or (gia thanh)) va cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) OR (ky nang)) xa hoi. hieu vien bach xuc ((va tinh) or (gia thanh)) va cua tre*.