Perhaps you should try some spelling variations:
van tham » van thanh, van tuan, van chat
ban hanh » ban hang
hanh van » thanh van, khanh van, hanh va
su triet » su viet, su tien, ve triet
va tham » va cham, va thanh, va thuat
luu ban » luu bang, luu van, luu dan
van su » dan su
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang x hoi. hieu ((va tham) OR (van tham)) luu ban hanh van su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang x hoi. hieu ((va tham) OR (van tham)) luu ban hanh van su triet".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang x hoi. hieu ((va tham) OR (van tham)) luu ban hanh van su triet*.