new site about some keyword lost in serp

www.sdseo.com.cn my new site， it rank well in some keyword,but for some keyword(not competed kw)it gone out of serp in google. I heard of sandbox is about domain,if you in sandbox, your all keyword not in serp. many site that irrelevant to that kw all rank high than me. why? if it bez not sandbox,what cause that? triple link?(I made a triple link for my site for that kw).

 

Simple. you dont put those keywords anywhere in your site. So how cound the search engines know which keywords you want them to focus. You put a keywords in chinese you you would like the visitor fine those keywords in chinese?

 

my site is for chinese,i put keyword site already.

 

if your site is new , loosing your rank may be sandbox. you can look the dp sandbox forum to learn more