Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
cham duc » cham soc, pham duy, phan duc
va thanh » gia thanh, ban thanh, va tinh
thanh de » hanh de, thanh ve, thanh do
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua

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 tu nang x ho. hieu va ((cham duc) or (pham duc)) va thanh de ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang x ho. hieu va ((cham duc) OR (pham duc)) va thanh de ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang x ho. hieu va ((cham duc) or (pham duc)) va thanh de ((cua triet) or (va triet))*.