Perhaps you should try some spelling variations:
nhan dien » nhan vien, nhan dieu, nhan dan
sach dao » lanh dao
va nhan » van nhan, ca nhan, va phan
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
sach ly » sach y, sach lo, sach ty
nang xa » nang x, lang xa, mang xa
soc va » hoc va, loc va, doc va
tu tre » tu tren, tu te, tuoi 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 ly) or (sach dao)) ((nang xa) or (nang ma)) hoi. hieu ve cham soc va nhan dien tu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ly) OR (sach dao)) ((nang xa) OR (nang ma)) hoi. hieu ve cham soc va nhan dien tu tre.
• Adding a wildcard symbol may retrieve word variants: vu ((sach ly) or (sach dao)) ((nang xa) or (nang ma)) hoi. hieu ve cham soc va nhan dien tu tre*.