Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, tu cach
te sach » toc sach
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cuc tre » duc tre, cua tre, cuu tre
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
ve nam » he nam, va nam, le nam
thu va » thuc va, thue va, tu va

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) OR (te sach)) ((y nang) OR (v nang)) xa hoi. hieu ve nam thu va hanh tai cuc tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ((y nang) or (v nang)) xa hoi. hieu ve nam thu va hanh tai cuc tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ((y nang) or (v nang)) xa hoi. hieu ve nam thu va hanh tai cuc tre*.