Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van tuan » van ban, anh tuan
van quan » van ban
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
ve nam » he nam, va nam, le nam
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky lang) OR (ky dang)) xa hoi. hieu ve nam thu ((van tuan) or (van quan)) de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky lang) OR (ky dang)) xa hoi. hieu ve nam thu ((van tuan) OR (van quan)) de cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky lang) OR (ky dang)) xa hoi. hieu ve nam thu ((van tuan) or (van quan)) de cua triet*".