Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec coc » viec doc, viec cong, viec cuoi
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
va hanh » va thanh, va danh, ban hanh
vu van » tu van
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu van ky nang xa hoi. hieu viec coc luc ((va hanh) or (van hanh)) hai ((cua tu) OR (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu van ky nang xa hoi. hieu viec coc luc ((va hanh) OR (van hanh)) hai ((cua tu) OR (cua su))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu van ky nang xa hoi. hieu viec coc luc ((va hanh) or (van hanh)) hai ((cua tu) OR (cua su))*".