Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh di » thanh doi, thanh de, thanh do
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
ky sang » ky nang, ky dang, ky tang
ma hoi » mai hoi, xa hoi, me hoi
di cua » dai cua, doi cua, de cua

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 ky sang ((ma hoi) or (ma hoa)). ((hieu ve) OR (hieu va)) cam xuc van thanh di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ((ma hoi) OR (ma hoa)). ((hieu ve) OR (hieu va)) cam xuc van thanh di cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ((ma hoi) or (ma hoa)). ((hieu ve) OR (hieu va)) cam xuc van thanh di cua vat*".