Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dinh dat » dinh ket, dinh van, dinh lam
dinh day » dinh dao, dinh da, dinh duy
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (hoc sach)) ky tang xa hoi. hieu ve cham soc va ((dinh day) OR (dinh dat)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ky tang xa hoi. hieu ve cham soc va ((dinh day) OR (dinh dat)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (hoc sach)) ky tang xa hoi. hieu ve cham soc va ((dinh day) OR (dinh dat)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) ky tang xa hoi. hieu ve cham soc va ((dinh day) OR (dinh dat)) cua triet*.