Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va triet » va thiet, va trien, cua triet
bat hanh » bat khanh, ban hanh, bao hanh
ve triet » va trien, su triet
va nhan » van nhan, ca nhan, va nha
sach ty » sach y, sach tu, sach thu
suc bat » luc bat, duoc bat
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va phan » van phan, va phat, va phap

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 hoi. hieu ((va nhan) or (va phan)) suc bat 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 hoi. hieu ((va nhan) OR (va phan)) suc bat hanh vi ((va triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. hieu ((va nhan) or (va phan)) suc bat hanh vi ((va triet) or (ve triet))*.