Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cac tu » cac thu, cach tu, cac du

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 x)) hoi. hieu va cac tu va hanh dai 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 x)) hoi. hieu va cac tu va hanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) y ((nang xa) OR (nang x)) hoi. hieu va cac tu va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) y ((nang xa) OR (nang x)) hoi. hieu va cac tu va hanh dai cua triet*.