Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh cua » manh cua, hang cua, hanh sua
cua cua » cua chua, ca cua, qua cua
va hanh » van hanh, va thanh, va danh
vu sach » su sach, vu khach
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
v nang » va nang, vu nang, van nang

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

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