Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
su triet » su viet, su tien, ve triet
cua viet » ca viet, hoa viet, cua vat
thanh vi » hanh vi, thanh va, thanh ve
suc ban » suc ben, duc ban, cuc ban
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
long ha » dong ha, cong ha, dong hoa
cao suc » cao su, cao duc
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach _ ((lang ha) or (long ha)) noi. hieu va cao suc ban thanh vi ((cua viet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach _ ((lang ha) OR (long ha)) noi. hieu va cao suc ban thanh vi ((cua viet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: so sach _ ((lang ha) or (long ha)) noi. hieu va cao suc ban thanh vi ((cua viet) or (su triet))*.