Perhaps you should try some spelling variations:
va thieu » va thiet, va hieu, va tieu
va thanh » gia thanh, ban thanh, va tinh
cham xuc » cam xuc, chat xuc, cham soc
va hanh » van hanh, va danh, ban hanh
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
va cham » va chat, va tham
vai va » mai va, dai va, hai va

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 ((nang ma) OR (tang ma)) hoi. hieu va cham xuc ((va hanh) or (va thanh)) vai va thieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang ma) OR (tang ma)) hoi. hieu va cham xuc ((va hanh) OR (va thanh)) vai va thieu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang ma) OR (tang ma)) hoi. hieu va cham xuc ((va hanh) or (va thanh)) vai va thieu".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang ma) OR (tang ma)) hoi. hieu va cham xuc ((va hanh) or (va thanh)) vai va thieu*.