Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
hieu ve » hieu va, hieu van
dinh de » dinh ve, dinh du, dinh le
va dinh » van dinh, va kinh, va tinh
nang ma » sang ma, nang cao, mang may
ve chat » va chat, van chat
tang ma » mang may, tang van
sach ly » sach lo, sach ty, sach hay
de cua » le cua, te cua, dieu cua
cua te » cua tu

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: tu ((sach ly) OR (sach y)) ((nang ma) OR (tang ma)) hoi. hieu ve chat duc va dinh de cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) or (sach y)) ((nang ma) OR (tang ma)) hoi. hieu ve chat duc va dinh de cua te~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach y)) ((nang ma) OR (tang ma)) hoi. hieu ve chat duc va dinh de cua te*.