Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh lam » thanh lap, hanh va, dinh lam
chat duc » chat xuc, chat doc, chet duoc
ve chat » va chat, van chat
su sach » so sach, vu sach
va nang » van nang, da nang, cam nang
hieu ve » hieu va, hieu van
v nang » vu nang, van nang, voi nang

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 ((v nang) OR (va nang)) xa hoi. hieu ve chat duc va ((hanh lam) or (hanh kem)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (va nang)) xa hoi. hieu ve chat duc va ((hanh lam) OR (hanh kem)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((v nang) OR (va nang)) xa hoi. hieu ve chat duc va ((hanh lam) or (hanh kem)) va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) OR (va nang)) xa hoi. hieu ve chat duc va ((hanh lam) or (hanh kem)) va triet*.