Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh dai » thanh hai, thanh tai, thanh dat
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
dac ban » cac ban, dac san, duc ban

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 ly nang ((xa hoi) or (x ho)). thien ((van cac) OR (van bac)) dac ban thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ly nang ((xa hoi) OR (x ho)). thien ((van cac) OR (van bac)) dac ban thanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ly nang ((xa hoi) or (x ho)). thien ((van cac) OR (van bac)) dac ban thanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ly nang ((xa hoi) or (x ho)). thien ((van cac) OR (van bac)) dac ban thanh dai cua triet*.