Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dan khanh » dang khanh, van khanh, dat khanh
canh thuc » anh thuc, cach thuc, danh thuc
dan hanh » dang hanh, dan thanh, ban hanh
nang ma » tang ma, sang ma, nang cao
va canh » van canh, va cach, ve canh
nang xa » nang x, lang xa, mang xa
vai cua » dai cua, hai cua, lai cua
so sach » so sanh, bo sach, co sach

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. lieu va canh thuc ((dan hanh) OR (dan khanh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang xa) OR (nang ma)) hoi. lieu va canh thuc ((dan hanh) OR (dan khanh)) vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y ((nang xa) or (nang ma)) hoi. lieu va canh thuc ((dan hanh) OR (dan khanh)) vai cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang xa) or (nang ma)) hoi. lieu va canh thuc ((dan hanh) OR (dan khanh)) vai cua triet*.