Here's a bunch of different search strings looking for doujinshi from this month so far and last month:

1 index dojin jpg
1 index of / bleach
1 index of bleach doujin
1 index of death note
1 index of deathnote
1 index of dojin
1 index of doujin
1 index of doujinshi
1 index.of: deathnote
1 intitle: index of / doujin jpg
1 intitle: index of doujin
1 intitle: index of jpg|pdf doujin
1 intitle: index of last modified size doujins
1 intitle: index of/ deathnote
1 intitle: index.of =doujin
1 intitle: index.of jpg death.note
1 intitle:index of death note
1 intitle:index of doujinshi
1 intitle:index.of doujin -html -htm -php -asp -txt -pls
2 intitle: index.of jpeg|jpg doujinshi
2 intitle:index.of doujin
2 intitle:index/of description last size doujin
2 ?intitle:index of? doujinshi
2 ?intitle:index.of? death note
2 ?intitle:index.of? dojin
2 ?intitle:index.of? doujin jpg
3 { inurl: htm|html|php intitle: index of last modified parent directory doujin}
1 { inurl: htm|html|php intitle:â%80%9dindex ofâ%80%9d â%80%9dlast modifiedâ%80%9d â%80%9dparent directoryâ%80%9d description size png|jpg â%80%9cdoujinshiâ%80%9c}â%80%9d%3b
2 -inurl: htm|html|php intitle:â%80%9dindex ofâ%80%9d â%80%9dlast modifiedâ%80%9d â%80%9dparent directoryâ%80%9d description size jpeg|jpg â%80%9cdoujinshiâ%80%9c}â%80%9d
1 parent directory index of / last modified doujinshi
1 parent directory index of bleach
1 parent directory last modified bleach index -md5 -xxx
1 intitle: index.of mp3|mp4|avi| death.note -html htm php asp cf jsp
1 intitle:index of death note last name
1 index of name parent directory doujin
1 index of parent directory doujin
1 index of/ bleach 52
1 -inurl: htm|html|php intitle: index of last modified parent directory description size jpg|jpc dojin 2
1 -inurl: htm|html|php intitle: index of last modified parent directory description size pdf|doc %doujin%
1 -inurl: htm|html|php intitle: index of last modified parent directory description size wma|jpg death note
1 -inurl:htm -inurl:html intitle: index bleach
1 -inurl:htm -inurl:html intitle: index of last modified doujin
1 -inurl:htm -inurl:html intitle: index of last modified jpg sk8
1 -inurl:html -inurl:htm intitle: index of dojin


Now why can't the people who can figure out these awesome search strings ever enroll as students at my university? All we ever get are the ones who can't figure out that to get academic stuff on teen smoking, they need to use "adolescent tobacco use".

(And I got one in December for "10 page story generators" from someone who was obviously looking for someone to do his homework for him.)