Perhaps you should try some spelling variations:
dang xay » dang van, van xay
van tuan » van ban, anh tuan
van quan » van ban
su triet » su viet, su tien, ve triet
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
de su » den su, ve su, de tu

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 dang xay hoi. hieu ve nam thu ((van tuan) or (van quan)) de su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang xay hoi. hieu ve nam thu ((van tuan) OR (van quan)) de su triet*.