Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
va thanh » ban thanh, va tinh, le thanh
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
hai cua » thai cua, dai cua, hoi cua
ma hoi » mai hoi, ma hoa, me hoi
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang ((ma hoi) OR (xa hoi)). hieu va cam xuc ((va thanh) or (gia thanh)) hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang ((ma hoi) OR (xa hoi)). hieu va cam xuc ((va thanh) OR (gia thanh)) hai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang ((ma hoi) OR (xa hoi)). hieu va cam xuc ((va thanh) or (gia thanh)) hai cua triet".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang ((ma hoi) OR (xa hoi)). hieu va cam xuc ((va thanh) or (gia thanh)) hai cua triet*.