Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vao hoang he snippets" » "van hoang he snippets", "tao khoang he snippets", "van hoan he snippets", "vao hoang phe snippets", "vao hoang de snippets", "vao hoang ha 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: (((("vao hoang 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: (((("vao hoang he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vao hoang he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vao hoang he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.