Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, lai hoi, mai doi
dai hoi » dai hoc, dai hai, dai moi
cac dat » cac dan, cai dat, cac dai
va hanh » van hanh, va thanh, va danh
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
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 v nang ((ma hoa) or (((mai hoi) OR (dai hoi)))). lieu va cac dat va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang ((ma hoa) OR (((mai hoi) OR (dai hoi)))). lieu va cac dat va hanh vi cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang ((ma hoa) or (((mai hoi) OR (dai hoi)))). lieu va cac dat va hanh vi cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang ((ma hoa) or (((mai hoi) OR (dai hoi)))). lieu va cac dat va hanh vi cua vat*.