Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
manh cua » doanh cua, ban cua
hanh cua » hang cua, hanh sua, doanh cua
hieu van » hieu va, thien van, lieu va
cam tuc » cam xuc, cam tu, nam thuc
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa

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 ve) or (hieu van)) cam tuc va ((hanh cua) OR (manh cua)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. ((hieu ve) OR (hieu van)) cam tuc va ((hanh cua) OR (manh cua)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. ((hieu ve) or (hieu van)) cam tuc va ((hanh cua) OR (manh cua)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. ((hieu ve) or (hieu van)) cam tuc va ((hanh cua) OR (manh cua)) cua triet*.