Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
cham duc » pham duc, cham soc, pham duy
thu sach » tu sach, thuat sach, thu hoach
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thuoc sach)) ty nang ((ma hoi) or (xa hoi)). hieu ve cham duc va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) ty nang ((ma hoi) OR (xa hoi)). hieu ve cham duc va hanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuoc sach)) ty nang ((ma hoi) or (xa hoi)). hieu ve cham duc va hanh dai cua triet*.