Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
sach thu » sach thue, sach thieu, sach tham
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
hieu ve » hieu va
sach ty » sach y, sach tu, xach tay
tang ma » mang may, tang van
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach ty) or (sach thu)) tang ma hoa. ((hieu ve) or (hieu van)) pham duc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ty) OR (sach thu)) tang ma hoa. ((hieu ve) OR (hieu van)) pham duc va danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ty) or (sach thu)) tang ma hoa. ((hieu ve) or (hieu van)) pham duc va danh vi cua te*.