Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
pham duy » pham duc
va hanh » va thanh, va danh, ban hanh
va pham » van pham, va phat, va phap
sach ly » sach y, sach lo, sach ty
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
sang ma » tang ma, nang ma, sang tao
hieu va » lieu va, hieu qua
di cua » dai cua, doi cua, de cua

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 ly ((nang xa) or (sang ma)) hoi. hieu va pham duy ((va hanh) or (van hanh)) di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ly ((nang xa) OR (sang ma)) hoi. hieu va pham duy ((va hanh) OR (van hanh)) di cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach ly ((nang xa) or (sang ma)) hoi. hieu va pham duy ((va hanh) or (van hanh)) di cua triet*.