Perhaps you should try some spelling variations:
qua nhan » cua nhan, qua nhat, qua phan
nhan luc » nang luc
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
luc ban » duc ban, cuc ban, luc bat
vai cua » dai cua, hai cua, lai cua
nang o » nang ho, nang ro, nang x
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((nang o) OR (nang co)) hoi. hieu qua nhan luc ban hanh ((vi cua) or (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang o) OR (nang co)) hoi. hieu qua nhan luc ban hanh ((vi cua) OR (vai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang o) OR (nang co)) hoi. hieu qua nhan luc ban hanh ((vi cua) or (vai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang o) OR (nang co)) hoi. hieu qua nhan luc ban hanh ((vi cua) or (vai cua)) triet*.