Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thu sach » thuat sach, thuoc sach, thu hoach
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
cau xuc » cam xuc, cau luc, cau truc
hai cua » thai cua, dai cua, hoi cua
bai cua » ban cua, dai cua, bai ca
xuc van » duc van, luc van, vuc van
tu sach » su sach, te sach, tu cach
van cau » van dau, van hau, van chat
xay hoi » xa hoi, tay hoi, cay phoi
ty dang » ty xang, ky dang, ty hang

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) OR (thu sach)) ty dang xay hoi. hieu van cau xuc van hanh ((bai cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty dang xay hoi. hieu van cau xuc van hanh ((bai cua) OR (hai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ty dang xay hoi. hieu van cau xuc van hanh ((bai cua) or (hai cua)) tre*".