Perhaps you should try some spelling variations:
van thanh » van tuan
ban thanh » ban hang
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
hanh dai » hanh tai, hanh dao, vanh dai
nang xa » nang x, lang xa, nang ma
duc ban » duc tan, duc van, dua ban
dai cua » doi cua
tu sai » tu bai, tu san, tu cai
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang xa hoi. thien ((van thanh) or (ban thanh)) duc ban hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang xa hoi. thien ((van thanh) OR (ban thanh)) duc ban hanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang xa hoi. thien ((van thanh) or (ban thanh)) duc ban hanh dai cua triet*.