Perhaps you should try some spelling variations:
nhan dien » nhan vien, nhan dieu, nhan dan
sach hay » sach han, sach ha, sach nay
van nhan » van phan, van thanh, danh nhan
dien cu » dien cuc, dien cua, dien tu
soc van » hoc van, oc van, sac van
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
lang xa » lang ha, dang xay, lang van
sach lo » sach dao, sach doi, sach hoi
cu tre » cu tren, cua tre, cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach hay) or (sach lo)) ((lang xa) or (nang cao)) hoi. hieu vu cham soc van nhan dien cu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach hay) OR (sach lo)) ((lang xa) OR (nang cao)) hoi. hieu vu cham soc van nhan dien cu tre.
• Adding a wildcard symbol may retrieve word variants: vu ((sach hay) or (sach lo)) ((lang xa) or (nang cao)) hoi. hieu vu cham soc van nhan dien cu tre*.