谷歌搜索参数详细列表（需要有一定基础的人才能看懂）
最基本搜索参数

https://www.google.com/search?

hl=en

&q=test

&btnG=Google+Search

高级搜索参数，包含了谷歌搜索后网址的全部参数

https://www.google.com/search?

as_q=test (query string)

&hl=en (language)

&num=10 (number of results [10,20,30,50,100])

&btnG=Google+Search

&as_epq= (complete phrase)

&as_oq= (at least one)

&as_eq= (excluding)

&lr= (language results. [lang_countrycode])

&as_ft=i (filetype include or exclude. [i,e])

&as_filetype= (filetype extension)

&as_qdr=all (date [all,M3,m6,y])

&as_nlo= (number range, low)

&as_nhi= (number range, high)

&as_occt=any (terms occur [any,title,body,url,links])

&as_dt=i (restrict by domain [i,e])

&as_sitesearch= (restrict by [site])

&as_rights= (usage rights [cc_publicdomain,cc_attribute,cc_sharealike,cc_noncommercial,cc_nonderived]

&safe=images (safesearch [safe=on,images=off])

&as_rq= (similar pages)

&as_lq= (pages that link)

&gl=us (2-digit country code in lowercase)

如果有兴趣可以在搜索结果中修改这些参数改变谷歌结果，例如修改参数的语言部分，直接改变结果中语言或者搜索别国谷歌数据结果。目前一些客户开发系统，获取谷歌数据就是通过不断变化这里的参数得到不同的结果

高级图像搜索参数

https://www.google.com/imghp?

as_q= (query string)

&hl=en (language)

&btnG=Google+Search

&as_epq= (complete phrase)

&as_oq= (at least one)

&as_eq= (excluding)

&imgtype= (restrict by image type)

&imgsz= (restrict by image size)

&imgc= (restrict by image color)

&as_filetype= (filetype extension)

&as_sitesearch= (restrict by [site])

&safe=off (safesearch [safe=on,images=off])

&as_st=y

Image type, size and color restrictions are explained more in depth under the restricting image search results section.

不同浏览器的搜索参数

Searching from Firefox 2.0.0.4:

https://www.google.com/search?

q=test

&ie=utf-8

&oe=utf-8

&aq=t

&rls=org.mozilla:en-US:official

&client=firefox-a

Searching from Internet Explorer 7.0.5730.11:

https://www.google.com/search?

q=test

&sourceid=ie7

&rls=com.microsoft:en-US

&ie=utf8

&oe=utf8