Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
thu sach » thuat sach, thuoc sach, thu hoach
cham xuc » cam xuc, chat xuc, cham soc
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
tu sach » su sach, te sach, tu cach
va danh » va dinh, va dan, va hanh
nang ma » tang ma, sang ma, nang cao
xuc va » duc va, tuc va, luc va
vai va » mai va, dai va, hai va
thiet » thieu

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 sach) OR (thu sach)) ky ((nang ma) OR (mang may)) hoi. hieu van cham xuc va danh vai va thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky ((nang ma) or (mang may)) hoi. hieu van cham xuc va danh vai va thiet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky ((nang ma) or (mang may)) hoi. hieu van cham xuc va danh vai va thiet*.