Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi truc so snippets" » "thi trac so snippets", "thi thuc so snippets", "thi thu so snippets", "thi tru so snippets", "thi truc loi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("thi truc so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi truc so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi truc so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi truc so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.