Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
lai cua » dai cua, hai cua, lai chau
lap cua » tap cua, lam cua, ap cua
duc gia » quoc gia
hieu ve » hieu va, hieu van
duy van » duy vat, dung van
y sang » _ sang, duy sang
ma hoi » mai hoi, xa hoi, ma hoa

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 ((y sang) or (duy van)) ma hoi. hieu ve cham duc gia thanh ((lap cua) OR (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y sang) OR (duy van)) ma hoi. hieu ve cham duc gia thanh ((lap cua) OR (lai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y sang) or (duy van)) ma hoi. hieu ve cham duc gia thanh ((lap cua) OR (lai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y sang) or (duy van)) ma hoi. hieu ve cham duc gia thanh ((lap cua) OR (lai cua)) tre*.