Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh dai » thanh hai, thanh tai, thanh dat
hieu van » hieu va, thien van, lieu va
cuc ban » cua ban, cac ban, cuu ban
luc ban » duc ban, luc bat, luc van
su sach » vu sach
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
van bao » van ban, van 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 sach)) ky nang xa hoi. hieu van bao ((luc ban) OR (cuc ban)) thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang xa hoi. hieu van bao ((luc ban) OR (cuc ban)) thanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky nang xa hoi. hieu van bao ((luc ban) OR (cuc ban)) thanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky nang xa hoi. hieu van bao ((luc ban) OR (cuc ban)) thanh dai cua triet*.