Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hong va du snippets" » "thong va du snippets", "phong va du snippets", "hong van du snippets", "hong va dau snippets", "hong va su snippets", "hong va tu 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: (((("hong va du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hong va du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong va du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong va du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.