Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hang ma » hang va, hang ca, tang ma
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, xa hoi, ma hoa
va bao » va bai
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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 hang ma hoi. hieu ((va cac) or (va bao)) xuc va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty hang ma hoi. hieu ((va cac) OR (va bao)) xuc va hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach ty hang ma hoi. hieu ((va cac) or (va bao)) xuc va hanh vi cua vat*.