Perhaps you should try some spelling variations:
vien cua » dien cua, tien cua, bien cua
thu xac » thau xay
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
va nhan » van nhan, ca nhan, va phan
xac ky » cac ky, sac ky, bac ky

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

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