Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
qua nhan » cua nhan, qua nhat, qua than
qua phan » cua phan, qua than, quang phan
ban hanh » ban hang
va triet » va thiet, va trien, ve triet
su triet » su viet, su tien, ve triet
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
luc ban » duc ban, cuc ban, luc bat

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 x ho. hieu ((qua nhan) OR (qua phan)) luc ban hanh vi ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang x ho. hieu ((qua nhan) OR (qua phan)) luc ban hanh vi ((va triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang x ho. hieu ((qua nhan) OR (qua phan)) luc ban hanh vi ((va triet) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang x ho. hieu ((qua nhan) OR (qua phan)) luc ban hanh vi ((va triet) or (su triet))*.