Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
ban hanh » ban hang
hanh lai » hanh lam, hanh tai, thanh lap
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, tu cach
te sach » toc sach
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
duc ban » duc tan, duc van, dua ban
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) OR (te sach)) ty nang x hoi. hieu ve cham duc ban hanh lai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ty nang x hoi. hieu ve cham duc ban hanh lai va triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ty nang x hoi. hieu ve cham duc ban hanh lai va triet*.