Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
so sach » so sanh, bo sach, co sach
van cam » van nam, van lam, van cau
xuc van » duc van, luc van, xuc ban
hanh ve » hanh va, hanh kem
su sach » vu sach

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 dang xa hoi. hieu van cam xuc van ((hanh ve) OR (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky dang xa hoi. hieu van cam xuc van ((hanh ve) OR (hanh vi)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky dang xa hoi. hieu van cam xuc van ((hanh ve) OR (hanh vi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky dang xa hoi. hieu van cam xuc van ((hanh ve) OR (hanh vi)) cua triet*.