Perhaps you should try some spelling variations:
hanh vai » hanh va, hanh tai, hanh van
su sach » so sach, vu sach
ty sang » ty xang, ty hang, duy sang
sang ma » tang ma, nang ma, sang tao
sach ty » sach y, sach tu, sach thu
xuc va » duc va, tuc va, luc va
va cao » va co, va dao, va bao
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: su sach ty sang ma hoi. hieu ((va cac) or (va cao)) xuc va ((hanh vai) OR (hanh vi)) cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty sang ma hoi. hieu ((va cac) OR (va cao)) xuc va ((hanh vai) OR (hanh vi)) cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty sang ma hoi. hieu ((va cac) or (va cao)) xuc va ((hanh vai) OR (hanh vi)) cua vat".
• Adding a wildcard symbol may retrieve word variants: su sach ty sang ma hoi. hieu ((va cac) or (va cao)) xuc va ((hanh vai) OR (hanh vi)) cua vat*.