Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
trinh van » trinh han, trinh quan, trinh toan
hoc thuc » hoc huu
doc thuc » do thuc, hoc thuoc, dan thuc
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
tinh va » tich va, trinh vat, tinh gia
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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 sac ky lang xa hoi. hieu ve ((hoc thuc) OR (doc thuc)) va ((tinh va) OR (trinh van)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky lang xa hoi. hieu ve ((hoc thuc) or (doc thuc)) va ((tinh va) OR (trinh van)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sac ky lang xa hoi. hieu ve ((hoc thuc) or (doc thuc)) va ((tinh va) OR (trinh van)) cua triet*.