Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham duc » pham duc, cham soc, pham duy
sach thu » sach thue, sach thieu, sach tham
va thanh » gia thanh, va tinh, le thanh
lam cua » nam cua, lam chat
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach tu » cach tu, sach ty, sach uu
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
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 tu) OR (sach thu)) tang ma hoi. hieu ve cham duc ((va thanh) or (ban thanh)) lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach thu)) tang ma hoi. hieu ve cham duc ((va thanh) OR (ban thanh)) lam cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tu) OR (sach thu)) tang ma hoi. hieu ve cham duc ((va thanh) or (ban thanh)) lam cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) OR (sach thu)) tang ma hoi. hieu ve cham duc ((va thanh) or (ban thanh)) lam cua tre*.