Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
cua triet » cua viet, su triet, va triet
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
sach ky » sac ky, sach y, sach ty
ve cac » vien cac
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ky nang x hoi. hieu ((ve cac) OR (va cac)) phuc ((van hanh) or (ban hanh)) di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ky nang x hoi. hieu ((ve cac) OR (va cac)) phuc ((van hanh) OR (ban hanh)) di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ky nang x hoi. hieu ((ve cac) OR (va cac)) phuc ((van hanh) or (ban hanh)) di cua triet".
• Adding a wildcard symbol may retrieve word variants: nuoc sach ky nang x hoi. hieu ((ve cac) OR (va cac)) phuc ((van hanh) or (ban hanh)) di cua triet*.