Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
so sach » so sanh, bo sach, co sach
cam thu » nam thu, cac thu, ca thu
thu van » thuc van, thuy van, tu van
hanh de » hanh ve, hanh kem
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((y nang) OR (v nang)) xa hoi. ((hieu qua) or (lieu va)) cam thu van hanh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((y nang) OR (v nang)) xa hoi. ((hieu qua) OR (lieu va)) cam thu van hanh de cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((y nang) OR (v nang)) xa hoi. ((hieu qua) or (lieu va)) cam thu van hanh de cua triet*".