Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lang van he snippets" » "dang van he snippets", "tang van he snippets", "hoang van he snippets", "lang van hoe snippets", "lang van hue snippets", "lang van de 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: (((("lang van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lang van he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lang van he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lang van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.