Perhaps you should try some spelling variations:
danh vien » doanh vien, danh viet, dan vien
vien cac » vien bach, vien dai, vien da
hieu va » lieu va, hieu qua
va cham » va chat, va tham
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach vay
soc va » hoc va, loc va, goc va
doc va » duoc va, hoc va, duc va
sach 2 » sach y
cac te » cac he, cac tu, cac ke

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach v) or (sach 2)) nang xa hoi. hieu va cham ((soc va) OR (doc va)) danh vien cac te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach 2)) nang xa hoi. hieu va cham ((soc va) OR (doc va)) danh vien cac te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach 2)) nang xa hoi. hieu va cham ((soc va) OR (doc va)) danh vien cac te".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach 2)) nang xa hoi. hieu va cham ((soc va) OR (doc va)) danh vien cac te*.