Perhaps you should try some spelling variations:
ban thanh » ban hang
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
lai cua » dai cua, hai cua, lai chau
y nang » ky nang, ly nang, v nang
va cao » va cac, va dao, va bao
va co » vo co

You may be able to get more results by adjusting your search query.

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