Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
cac thu » cach thuc, cac thoi
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cac tu » cach tu, cac du, tac tu

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 nang xa hoi. hieu vien ((cac tu) or (cac thu)) van hanh vai ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu vien ((cac tu) OR (cac thu)) van hanh vai ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu vien ((cac tu) or (cac thu)) van hanh vai ((cua triet) or (cua viet))*.