Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
nhan luc » nang luc
va danh » va dinh, va dan, va hanh
vu nhan » cu nhan, vu ngan, tu nhan
tu sach » thu sach, su sach, te sach
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
hieu vu » hieu va, hieu ve, hieu su
ha hoi » hoa hoi, ha noi, xa hoi
luc va » duc va, tuc va, loc va
vi cua » vai cua
di cua » dai cua, doi cua, de 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) or (nuoc sach)) ky lang ha hoi. hieu vu nhan luc va danh ((vi cua) OR (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (nuoc sach)) ky lang ha hoi. hieu vu nhan luc va danh ((vi cua) OR (di cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (nuoc sach)) ky lang ha hoi. hieu vu nhan luc va danh ((vi cua) OR (di cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (nuoc sach)) ky lang ha hoi. hieu vu nhan luc va danh ((vi cua) OR (di cua)) triet*.