Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh do » thanh de, thanh pho, thanh hoa
thanh di » thanh doi, thanh de, thanh dinh
sang tao » hang tai
cac duc » cac du, cao duc, cac dac
hieu va » lieu va, hieu qua
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang
so sanh » do sanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (so sanh)) ky sang tao hoi. hieu va cac duc va ((thanh di) OR (thanh do)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (so sanh)) ky sang tao hoi. hieu va cac duc va ((thanh di) OR (thanh do)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (so sanh)) ky sang tao hoi. hieu va cac duc va ((thanh di) OR (thanh do)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (so sanh)) ky sang tao hoi. hieu va cac duc va ((thanh di) OR (thanh do)) cua triet*.