Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
sach ty » sach tu, sach thu, xach tay
vai cua » dai cua, hai cua, lai cua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
va cao » va co, va dao, va bao

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