Perhaps you should try some spelling variations:
nam duoc » nam thuoc, da duoc, dat duoc
lam chat » luan chat, cao chat, ly chat
su sach » so sach, vu sach
ty nang » ty xang, ty hang, ly nang
thi van » thi lan, thi hanh, thi nang
duoc va » nuoc va, duc va, duoc ma
va hanh » van hanh, va thanh, va danh
lam cua » nam 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 ((ty nang) or (ky nang)) x hoi. thi van nam duoc va hanh ((lam cua) OR (lam chat)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ky nang)) x hoi. thi van nam duoc va hanh ((lam cua) OR (lam chat)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) or (ky nang)) x hoi. thi van nam duoc va hanh ((lam cua) OR (lam chat)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) or (ky nang)) x hoi. thi van nam duoc va hanh ((lam cua) OR (lam chat)) triet*.