Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
duc ban » dua ban, duc man, duc manh
duc van » duc va, duc manh, duc phan
hanh di » hanh vi, hanh de, hang di
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang x hoi. hieu ve cam ((duc ban) or (((duc van) or (duc tan)))) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ve cam ((duc ban) OR (((duc van) OR (duc tan)))) hanh di cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ve cam ((duc ban) or (((duc van) or (duc tan)))) hanh di cua triet*.