Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
van nhan » van phan, van thanh, danh nhan
nhan luc » nang luc
van hanh » van thanh, ban hanh, van ban
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » co hoi, cao hoc, tao hoi
van anh » van thanh, tuan anh, van minh
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: te sach ky nang ((cao hoi) or (cau hoi)). thien van nhan luc ((van hanh) OR (van anh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((cao hoi) OR (cau hoi)). thien van nhan luc ((van hanh) OR (van anh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((cao hoi) or (cau hoi)). thien van nhan luc ((van hanh) OR (van anh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((cao hoi) or (cau hoi)). thien van nhan luc ((van hanh) OR (van anh)) vi cua triet*.