Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
hanh lai » hanh lam, hanh tai, thanh lap
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
mai hoi » mai khoi, dai hoi, lai hoi
va chat » van chat, va phat, cao chat
va tham » van tham, va cham, va thanh
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau

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 ty nang mai hoi. hieu ((va chat) or (va tham)) duc va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang mai hoi. hieu ((va chat) OR (va tham)) duc va hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang mai hoi. hieu ((va chat) or (va tham)) duc va hanh lai cua triet*.