Perhaps you should try some spelling variations:
tinh de » tinh da, sinh de, tinh he
va tinh » may tinh
sach ky » sac ky, sach ty, sach kem
tang ma » mang may, tang van
ma hoi » mai hoi, xa hoi, ma hoa
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao
de cua » le cua, te cua, dieu 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: vu ((sach ky) OR (sach y)) tang ma hoi. hieu ((ve cai) OR (va cam)) duc va tinh de cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sach y)) tang ma hoi. hieu ((ve cai) or (va cam)) duc va tinh de cua vat~".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sach y)) tang ma hoi. hieu ((ve cai) or (va cam)) duc va tinh de cua vat*.