Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
sach tham » sach nha
cham duc » pham duc, cham soc, pham duy
hanh lai » hanh lam, hanh tai, thanh lap
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
ca viet » va viet, co viet, hoa viet
lai ca » lai cua, lai cam, loai ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((cach thuc) or (sach tham)) xang ((xa hoi) or (ma hoa)). hieu va cham duc va hanh lai ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((cach thuc) OR (sach tham)) xang ((xa hoi) OR (ma hoa)). hieu va cham duc va hanh lai ca viet.
• Adding a wildcard symbol may retrieve word variants: thu ((cach thuc) or (sach tham)) xang ((xa hoi) or (ma hoa)). hieu va cham duc va hanh lai ca viet*.