Perhaps you should try some spelling variations:
nhan luc » nang luc
danh gia » dan gian
sach ly » sach lo, sach ty, sach hay
cua tre » cua te, cua triet, dua tren
va danh » va dinh, va dan, va hanh
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
cuu tre » cau tren, cau treo
luc va » duc va, tuc va, loc va
va hoi » xa hoi, va hoc, va 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 y)) hang va hoi. hieu ve nhan luc va danh gia ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ly) OR (sach y)) hang va hoi. hieu ve nhan luc va danh gia ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ly) OR (sach y)) hang va hoi. hieu ve nhan luc va danh gia ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: so ((sach ly) OR (sach y)) hang va hoi. hieu ve nhan luc va danh gia ((cua tre) or (cuu tre))*.