Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu hoa » tieu hoa, dieu hoa, hiep hoa
va triet » va thiet, va trien, cua triet
ban hanh » ban hang
thuc ban » thuoc ban, thuc dan, thu ban
nam thuc » nam thuoc, am thuc, nam thu
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
hoa nam » hoai nam, hoat nam, hoa am

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((nang xa) or (nang ma)) hoi. hieu hoa nam thuc ban hanh vi ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (nang ma)) hoi. hieu hoa nam thuc ban hanh vi ((va triet) OR (ve triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) or (nang ma)) hoi. hieu hoa nam thuc ban hanh vi ((va triet) OR (ve triet))*".