Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
hanh ca » hanh cac, hanh cat, hanh cua
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (te sach)) ky nang xa hoi. hieu van nam ((xuc van) OR (vuc van)) hanh ca cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (te sach)) ky nang xa hoi. hieu van nam ((xuc van) OR (vuc van)) hanh ca cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (te sach)) ky nang xa hoi. hieu van nam ((xuc van) OR (vuc van)) hanh ca cua triet".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (te sach)) ky nang xa hoi. hieu van nam ((xuc van) OR (vuc van)) hanh ca cua triet*.