Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cua tre » cua te, cuu tre, dua tren
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
dao luc » dao duc, dao tuc, bao luc
su sach » so sach, vu sach
danh xa » danh ca, dinh xa, canh xa
ky danh » ky anh, ky dang
so sanh » do sanh
luc va » duc va, tuc va, loc va
va dao » ca dao

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 sanh)) ky danh xa hoi. lieu va dao luc va hanh va ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ky danh xa hoi. lieu va dao luc va hanh va ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) ky danh xa hoi. lieu va dao luc va hanh va ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ky danh xa hoi. lieu va dao luc va hanh va ((cua tre) OR (cua triet))*.