Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
binh voi » binh hoi, minh voi, tinh voi
tinh vi » trinh vi, tinh voi, tinh va
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
co luc » coc luc, co luy
luc va » duc va, tuc va, loc va
ve co » vo co, va co, de co

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y ((nang xa) or (nang ma)) hoi. hieu ve co luc va ((tinh vi) or (binh voi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang xa) OR (nang ma)) hoi. hieu ve co luc va ((tinh vi) OR (binh voi)) cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang xa) or (nang ma)) hoi. hieu ve co luc va ((tinh vi) or (binh voi)) cua triet*.