Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ve triet » va trien, su triet
cham duc » pham duc, pham duy, phan duc
sang tao » hang tai
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
van ve » van de, ban ve, van le

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty ((nang xa) or (sang tao)) hoi. hieu ve ((cham duc) OR (cham soc)) gia thanh van ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (sang tao)) hoi. hieu ve ((cham duc) OR (cham soc)) gia thanh van ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang xa) or (sang tao)) hoi. hieu ve ((cham duc) OR (cham soc)) gia thanh van ve triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang xa) or (sang tao)) hoi. hieu ve ((cham duc) OR (cham soc)) gia thanh van ve triet*.