Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
van anh » tuan anh, van minh
su viet » so viet

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. hieu qua cac xuc ((van anh) OR (van thanh)) ve ((cua triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu qua cac xuc ((van anh) OR (van thanh)) ve ((cua triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu qua cac xuc ((van anh) OR (van thanh)) ve ((cua triet) or (su viet))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu qua cac xuc ((van anh) OR (van thanh)) ve ((cua triet) or (su viet))*.