Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh sua » hinh su, hanh va, hanh tu
cac thuc » cach thuc, cac thu, can thuc
sua cua » sua chua, qua cua, lua cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
su sach » vu sach
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
so sach » so sanh, bo sach, co sach
ve cac » va cac, vien cac

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) or (so sach)) y ((nang xa) or (nang ma)) hoi. hieu ve cac thuc va hanh sua cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y ((nang xa) OR (nang ma)) hoi. hieu ve cac thuc va hanh sua cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) y ((nang xa) or (nang ma)) hoi. hieu ve cac thuc va hanh sua cua triet*.