Perhaps you should try some spelling variations:
thanh dam » thanh dat, thanh nam, thanh tam
sang tao » hang tai
sach dao » lanh dao
va thanh » gia thanh, ban thanh, va tinh
cham duc » pham duc, cham soc, pham duy
sach duy » sach dung, sach duoc, sach dat
dam cua » dai cua, day cua, nam cua
va cham » va chat, va tham
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, mang may
cua tre » cua te, cuu tre, cua triet

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