Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh va » tich va, trinh van, trinh vat
dinh va » dinh van, dinh ve, sinh va
hieu va » lieu va, hieu qua
su sach » vu sach
so sach » so sanh, bo sach, co sach
cac thu » cach thuc, cac thoi
thu va » thuc va, thue va, tu va
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) OR (so sach)) ky nang x hoi. hieu va cac thu va ((dinh va) or (tinh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang x hoi. hieu va cac thu va ((dinh va) OR (tinh va)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang x hoi. hieu va cac thu va ((dinh va) or (tinh va)) cua triet*".