Perhaps you should try some spelling variations:
khao hoat » khao sat, cao hoat, khao ha
van thanh » ban thanh, van tuan
thanh ban » thanh san, thanh van, thanh bac
cua triet » cua viet, su triet, va triet
hoat van » hoa van, hat van, hoang van
ky dang » ky nang
ky danh » ky anh
hieu vu » hieu va, hieu ve, hieu su
vu khao » va khao, vu kham, vu khac
ban cua » ban quan
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky dang) or (ky danh)) xa hoi. hieu vu khao hoat van thanh ban cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky dang) OR (ky danh)) xa hoi. hieu vu khao hoat van thanh ban cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky dang) or (ky danh)) xa hoi. hieu vu khao hoat van thanh ban cua triet*.