Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
van thanh » ban thanh, van tuan
cac cuoc » cac nuoc, ca cuoc, cac quoc
thu sach » tu sach, thuat sach, thuoc sach
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
lap cua » lai cua, tap cua, lam cua
cac suc » cao suc, cac nuoc, cac quoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang ((xa hoi) or (ma hoa)). hieu ve ((cac suc) OR (cac cuoc)) van thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ((xa hoi) OR (ma hoa)). hieu ve ((cac suc) OR (cac cuoc)) van thanh lap cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ((xa hoi) or (ma hoa)). hieu ve ((cac suc) OR (cac cuoc)) van thanh lap cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((xa hoi) or (ma hoa)). hieu ve ((cac suc) OR (cac cuoc)) van thanh lap cua triet*.