Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu le » hieu ve, hieu ly, tieu le
hieu he » hieu ve, hiem he, hieu hien
thu van » thuc van, thuy van, chu van
hanh de » hanh ve, hanh kem
y nang » ky nang, ly nang, v nang
tu van » tu va
de cua » le cua, te cua, dieu 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 y nang xa hoi. ((hieu le) OR (hieu he)) nam ((thu van) or (tu van)) hanh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. ((hieu le) OR (hieu he)) nam ((thu van) OR (tu van)) hanh de cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. ((hieu le) OR (hieu he)) nam ((thu van) or (tu van)) hanh de cua triet*".