Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc dao » thuc dan, thuc day, chuc dao
hanh di » hanh de, hang di, danh di
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
ve cac » va cac, vien cac

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 y nang xa hoi. hieu ((va cam) or (ve cac)) thuc dao ((hanh di) OR (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ((va cam) OR (ve cac)) thuc dao ((hanh di) OR (hanh vi)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu ((va cam) or (ve cac)) thuc dao ((hanh di) OR (hanh vi)) cua triet*".