Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
cuu tre » cua tre, cau tren, cau treo
vai cuu » vai cua
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
dau tuc » dau tu, dao tuc, cau truc
van dau » van dao, phan dau
tuc va » thuc va, truc va, tuc xa
tu sac » tu cac, tu san, tu bac
ke va » te va
ky va » ly va, my va, ky la

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 sac) OR (tu sach)) ((ky va) OR (ke va)) xa hoi. hieu van dau tuc va hanh vai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu sach)) ((ky va) OR (ke va)) xa hoi. hieu van dau tuc va hanh vai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ((ky va) OR (ke va)) xa hoi. hieu van dau tuc va hanh vai cuu tre*.