Perhaps you should try some spelling variations:
phan vien » nhan vien, phan kien, phan bien
vien cua » viec cua, dien cua, tien cua
hieu van » hieu va, thien van, lieu va
thu sac » thu sach, thu san, thu xac
cao suc » cao su, cao duc
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va
va phan » van phan, va phat, va phap
suc va » duc va, tuc va, luc va
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: thu sac ((ky lang) or (ky nang)) xa hoi. ((hieu ve) OR (hieu van)) cao suc va phan vien cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ((ky lang) OR (ky nang)) xa hoi. ((hieu ve) OR (hieu van)) cao suc va phan vien cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ((ky lang) or (ky nang)) xa hoi. ((hieu ve) OR (hieu van)) cao suc va phan vien cua te".
• Adding a wildcard symbol may retrieve word variants: thu sac ((ky lang) or (ky nang)) xa hoi. ((hieu ve) OR (hieu van)) cao suc va phan vien cua te*.