Perhaps you should try some spelling variations:
ban hanh » ban hang
tran anh » tran manh, tuan anh, tran thanh
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
cac duc » cac du, cao duc, cac dac
y lang » _ lang, tay lang, yen lang
o lang » hoa lang, hoi lang
vi va » vi van, vai va, vu va

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 ((y lang) OR (o lang)) xa hoi. lieu va cac duc ((ban hanh) or (tran anh)) vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y lang) OR (o lang)) xa hoi. lieu va cac duc ((ban hanh) OR (tran anh)) vi va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y lang) OR (o lang)) xa hoi. lieu va cac duc ((ban hanh) or (tran anh)) vi va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((y lang) OR (o lang)) xa hoi. lieu va cac duc ((ban hanh) or (tran anh)) vi va triet*.