Perhaps you should try some spelling variations:
duoc van » duoc va, duc van, duoc ban
lam duoc » nam duoc, luat duoc, lam thuoc
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly vang
thi van » thi lan, thi hanh, thi nang
van lam » van nam
van anh » van thanh, tuan anh, van minh
vai cua » hai cua, lai cua, bai cua
y nang » ky nang, v nang, may 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 ((y nang) OR (ly nang)) xa hoi. thi van lam duoc van anh ((vai cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ly nang)) xa hoi. thi van lam duoc van anh ((vai cua) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) OR (ly nang)) xa hoi. thi van lam duoc van anh ((vai cua) or (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (ly nang)) xa hoi. thi van lam duoc van anh ((vai cua) or (dai cua)) triet*.