Perhaps you should try some spelling variations:
nhan dien » nhan vien, nhan dieu, toan dien
nhan dan » phan dau, gian dan, nhan tai
suc van » su van, duc van, luc van
bao suc » bao luc, cao suc, bao thuc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sac ky » sai ky
ve bao » te bao, va bao
cuc te » cua te, cuc thue, cuc tieu

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) or (cac ky)) nang xa hoi. hieu ve bao suc van ((nhan dien) OR (nhan dan)) cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (cac ky)) nang xa hoi. hieu ve bao suc van ((nhan dien) OR (nhan dan)) cuc te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sac ky) or (cac ky)) nang xa hoi. hieu ve bao suc van ((nhan dien) OR (nhan dan)) cuc te".
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) or (cac ky)) nang xa hoi. hieu ve bao suc van ((nhan dien) OR (nhan dan)) cuc te*.