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