Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thuoc sach
nang xa » nang x, lang xa, nang ma
duc ban » duc tan, duc van, dua ban
lai cua » hai cua, lai chau, thai cua
y nang » ky nang, ly nang, v nang
va cam » va cham, va cao, va cai

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