Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh cat » hanh cac, hanh luat, nhanh cay
van nang » van quang, van ban, van dong
cat cua » chat cua, ca cua, mat cua
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va
loc va » hoc va
v nang » va nang, vu nang, voi nang

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