Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
duc ban » duc tan, dua ban, duc man
duc van » duc va, duc tan, duc manh
lai va » loai va, mai va, dai va
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: tu sach ky nang x hoi. hieu ve cham ((duc ban) or (duc van)) hanh lai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ve cham ((duc ban) OR (duc van)) hanh lai va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ve cham ((duc ban) or (duc van)) hanh lai va triet*.