Perhaps you should try some spelling variations:
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
ban danh » ban doanh, ban dan, van danh
tu sach » thu sach, su sach, te sach
hai cua » thai cua, dai cua, hoi cua
vai cua » dai cua, lai cua, bai cua
sach tu » sach thu, cach tu, sach ty
lam xuc » cam xuc, lam duoc
van lam » van nam
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano

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