Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
thu sach » tu sach, thuat sach, thuoc sach
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
nam duc » nam duoc, pham duc, nam thuc
duc ban » duc tan, duc van, dua ban
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, dua tren
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((nang xa) or (nang cao)) hoi. hieu va nam duc ban thanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (nang cao)) hoi. hieu va nam duc ban thanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (nang cao)) hoi. hieu va nam duc ban thanh vi ((cua tre) or (cua triet))*.