Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thu sac » thu sach, thu san, thu xac
nang xa » nang x, lang xa, nang ma
xuc van » luc van, xuc ban, thuc van
duc van » duc va, duc tan, duc manh
sac ky » cac ky, sai ky
va cao » va cac, va co, va bao
va dao » ca dao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang xa hoi. hieu ((va cao) or (va dao)) ((xuc van) OR (duc van)) hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang xa hoi. hieu ((va cao) OR (va dao)) ((xuc van) OR (duc van)) hanh vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky nang xa hoi. hieu ((va cao) or (va dao)) ((xuc van) OR (duc van)) hanh vi cua viet".
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang xa hoi. hieu ((va cao) or (va dao)) ((xuc van) OR (duc van)) hanh vi cua viet*.