Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tinh di » tinh doi, trinh di, tinh da
va tinh » may tinh
ty sang » ty hang, duy sang, thu sang
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty sang) OR (ty xang)) ma hoi. hieu ((ve cam) OR (ve cac)) duc va tinh di cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty sang) OR (ty xang)) ma hoi. hieu ((ve cam) or (ve cac)) duc va tinh di cua vat~".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty sang) OR (ty xang)) ma hoi. hieu ((ve cam) or (ve cac)) duc va tinh di cua vat*.