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