Perhaps you should try some spelling variations:
danh gia » dan gian
nhan luc » nang luc
gia cua » gian cua, giau cua, gia cuc
va danh » va dinh, va dan, va hanh
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sach ly » sach y, sach lo, sach hay
sach ty » sach y, sach tu, sach thu
va hoi » xa hoi, va hoc
luc va » duc va, tuc va, loc va
va hoa » van hoa, va hoc, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ly) OR (sach ty)) hang ((va hoi) or (va hoa)). hieu ve nhan luc va danh gia cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ly) OR (sach ty)) hang ((va hoi) OR (va hoa)). hieu ve nhan luc va danh gia cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ly) OR (sach ty)) hang ((va hoi) or (va hoa)). hieu ve nhan luc va danh gia cua tre".
• Adding a wildcard symbol may retrieve word variants: so ((sach ly) OR (sach ty)) hang ((va hoi) or (va hoa)). hieu ve nhan luc va danh gia cua tre*.