Perhaps you should try some spelling variations:
"doi chu chan snippets" » "doi chu code snippets", "doi chu han snippets", "doi chua chay snippets", "doi chu van snippets", "hoi chu chan snippets", "doi thu chan snippets", "doi chi chan snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("doi chu chan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("doi chu chan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doi chu chan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doi chu chan snippets"))) or ("locating bug core snippets"))*.