Perhaps you should try some spelling variations:
thien van » thi van
phan vien » nhan vien, phan kien, phan bien
vien cua » viec cua, dien cua, tien cua
hieu van » hieu va, lieu va, hieu ve
thu sac » thu sach, thu san, thu xac
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
suc va » duc va, tuc va, soc va
luc va » duc va, tuc va, loc 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 xa hoi. ((hieu van) OR (thien van)) 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 hoi. ((hieu van) OR (thien van)) 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 hoi. ((hieu van) OR (thien van)) cao ((suc va) or (luc va)) phan vien cua te".
• Adding a wildcard symbol may retrieve word variants: thu sac ky lang xa hoi. ((hieu van) OR (thien van)) cao ((suc va) or (luc va)) phan vien cua te*.