Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
ban danh » ban doanh, ban dan, van danh
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
vai cua » dai cua, hai cua, lai cua
van lam » van nam
lam xuc » cam xuc, lam duoc
sach tu » cach tu, sach ty, sach uu
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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 tu) OR (sach thu)) nang xa hoi. hieu van lam xuc ((ban hanh) or (ban danh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach thu)) nang xa hoi. hieu van lam xuc ((ban hanh) OR (ban danh)) vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tu) OR (sach thu)) nang xa hoi. hieu van lam xuc ((ban hanh) or (ban danh)) vai cua tre*".