Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
dinh cua » dinh cuu, sinh cua, dinh cu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
cac luu » cac luat, sach luu
cua te » cua 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 cac ky nang xa hoi. ((hieu ve) or (hieu van)) cac luu ((van hanh) OR (ban hanh)) dinh cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang xa hoi. ((hieu ve) OR (hieu van)) cac luu ((van hanh) OR (ban hanh)) dinh cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang xa hoi. ((hieu ve) or (hieu van)) cac luu ((van hanh) OR (ban hanh)) dinh cua te".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang xa hoi. ((hieu ve) or (hieu van)) cac luu ((van hanh) OR (ban hanh)) dinh cua te*.