Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vien cac » vien dai, vien da, gian cac
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
toc van » hoc van, toc san, tac van
hanh di » hanh vi, hanh de, hang di
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: su sach ky nang xa hoi. hieu ((vien cac) OR (vien bach)) toc van hanh di cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu ((vien cac) OR (vien bach)) toc van hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((vien cac) OR (vien bach)) toc van hanh di cua triet*.