Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh noi » ha noi, hanh vi, nang noi
pham duy » pham duc
cham duc » pham duc, cham soc, phan duc
noi cua » hoi cua, doi cua, moi cua
va hanh » van hanh, va thanh, va danh
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa

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 (nang ma)) hoi. hieu ve ((cham duc) or (pham duy)) va hanh noi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (nang ma)) hoi. hieu ve ((cham duc) OR (pham duy)) va hanh noi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang xa) OR (nang ma)) hoi. hieu ve ((cham duc) or (pham duy)) va hanh noi cua triet*".