Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lam » thanh lap, hanh lam, thanh nam
va thanh » gia thanh, ban thanh, va tinh
tang mai » tang ma, tang tai, lang mai
cham duc » pham duc, cham soc, pham duy
va cham » va chat, va tham
cua tre » cua te, cuu tre, dua tren
tu sach » thu sach, te sach, tu cach
mai hoi » mai khoi, dai hoi, lai hoi
ty tang » tay tang, ty xang, ty hang
su sach » so sach, vu sach
hieu va » lieu va, hieu qua

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) or (su sach)) ty tang mai hoi. hieu va cham duc va thanh lam ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty tang mai hoi. hieu va cham duc va thanh lam ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ty tang mai hoi. hieu va cham duc va thanh lam ((cua tre) OR (cua triet))*".