Perhaps you should try some spelling variations:
nham thuc » nam thuc, nham thu, pham thuc
nhan thuc » nhan luc, dan thuc, toan thuc
thanh lai » thanh hai, thanh lap, thanh loi
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu va, hieu van
y nang » ky nang, v nang, may nang

You may be able to get more results by adjusting your search query.

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