Perhaps you should try some spelling variations:
sach vay » sach va, sach hay, sach dao
nhan luc » nang luc
sach nay » sach hay, sach nang, sach ngan
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((((sach vay) OR (sach nay))) OR (sach y)) nang xa hoi. hieu ve nhan luc va dan vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((((sach vay) OR (sach nay))) or (sach y)) nang xa hoi. hieu ve nhan luc va dan vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te ((((sach vay) OR (sach nay))) or (sach y)) nang xa hoi. hieu ve nhan luc va dan vi cua tre*.