Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
han thanh » phan thanh, hoan thanh, huan thanh
va triet » va thiet, va trien, ve triet
thanh di » thanh doi, thanh de, thanh do
tham huu » pham huu, tham thuc, tran huu
tu sach » thu sach, su sach, te sach
va tham » van tham, va cham, va thanh
nang xa » lang xa, nang ma, mang xa
sach v » sach va, sach y, sach 2

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 v ((nang xa) OR (nang x)) hoi. lieu va tham huu han thanh di ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v ((nang xa) OR (nang x)) hoi. lieu va tham huu han thanh di ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v ((nang xa) OR (nang x)) hoi. lieu va tham huu han thanh di ((cua triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach v ((nang xa) OR (nang x)) hoi. lieu va tham huu han thanh di ((cua triet) or (va triet))*.