Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
ban hanh » ban hang
hanh lap » thanh lap, hanh lam, hanh cap
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
ty nang » ky nang, ty hang, ly nang
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
duc ban » duc tan, duc van, dua ban
lap va » tap va

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 ((ty nang) OR (ty xang)) xa hoi. hieu ve chat duc ban hanh lap va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ty xang)) xa hoi. hieu ve chat duc ban hanh lap va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) OR (ty xang)) xa hoi. hieu ve chat duc ban hanh lap va triet*.