Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va triet » va thiet, va trien, cua triet
ban hanh » ban hang
nhan luc » nang luc
ve triet » va trien, su triet
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
luc ban » duc ban, cuc ban, luc bat
nang xa » nang x, lang xa, mang xa
hieu ca » hieu cac, hieu cua, hieu va

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 ma)) hoi. hieu ca nhan luc ban hanh vi ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (nang ma)) hoi. hieu ca nhan luc ban hanh vi ((va triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (nang ma)) hoi. hieu ca nhan luc ban hanh vi ((va triet) or (ve triet))*.