Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
doi cua » dai cua, hoi cua
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky tang ma hoi. hieu ((ve cam) or (va cam)) xuc ((va hanh) OR (va danh)) doi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky tang ma hoi. hieu ((ve cam) OR (va cam)) xuc ((va hanh) OR (va danh)) doi cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky tang ma hoi. hieu ((ve cam) or (va cam)) xuc ((va hanh) OR (va danh)) doi cua vat*".