Perhaps you should try some spelling variations:
sach danh » sach tranh, sach dung, sach kinh
sach dao » lanh dao
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
sach va » sach xa, sach ha, sach nha
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, xuc ban
ve cam » ve cham, ve cac, va cam
vi su » va su, ve su, ki su

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 va) or (((sach danh) OR (sach dao)))) nang xa hoi. hieu ve cam xuc van hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach va) OR (((sach danh) OR (sach dao)))) nang xa hoi. hieu ve cam xuc van hanh vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach va) or (((sach danh) OR (sach dao)))) nang xa hoi. hieu ve cam xuc van hanh vi su triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach va) or (((sach danh) OR (sach dao)))) nang xa hoi. hieu ve cam xuc van hanh vi su triet*.