Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu cac » hieu luc, hieu va, hieu van
danh dau » lanh dao, hang dau, xang dau
chat soc » cham soc, chat hoc, chat doc
hieu cao » chieu cao, hieu ca, kieu cao
nang xa » nang x, lang xa, nang ma
danh tu » anh tu, doanh thu
sac ky » cac ky, sai ky
soc va » hoc va, loc va, doc va
tu sac » tu sach, tu cac, tu san

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 cao) OR (hieu cac)) chat soc va ((danh dau) or (danh tu)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. ((hieu cao) OR (hieu cac)) chat soc va ((danh dau) OR (danh tu)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. ((hieu cao) OR (hieu cac)) chat soc va ((danh dau) or (danh tu)) cua viet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. ((hieu cao) OR (hieu cac)) chat soc va ((danh dau) or (danh tu)) cua viet*.