Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
nhan cuc » nhan cuoc, nhanh cuc, nhan luc
su triet » su viet, su tien, ve triet
lang ha » long ha
sach ky » sac ky, sach y, sach ty
cuc ban » cua ban, cac ban, cuu ban
nang xa » nang x, lang xa, nang ma
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky ((nang xa) or (lang ha)) hoi. lieu va nhan cuc ban hanh vi ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky ((nang xa) OR (lang ha)) hoi. lieu va nhan cuc ban hanh vi ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thuat sach ky ((nang xa) or (lang ha)) hoi. lieu va nhan cuc ban hanh vi ((va triet) or (su triet))*.