Perhaps you should try some spelling variations:
thuat dan » thuat san, thuat ban, thuat dam
cua triet » cua viet, su triet
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cac lop » cac hop, cac loai
cac lo » cac co, cac bo, cac ho
dan ky » van ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thuat dan ky nang xa hoi. hieu va ((cac lo) OR (cac lop)) van hanh vai ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat dan ky nang xa hoi. hieu va ((cac lo) or (cac lop)) van hanh vai ((cua triet) OR (va triet))~".
• Adding a wildcard symbol may retrieve word variants: thuat dan ky nang xa hoi. hieu va ((cac lo) or (cac lop)) van hanh vai ((cua triet) OR (va triet))*.