Perhaps you should try some spelling variations:
"van quang code snippets" » "van quang de snippets", "van quan code snippets", "tran quang code snippets", "van tuan code snippets", "van quang code slippers"
"hanh java java snippets" » "hanh va java snippets", "hanh java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("hanh java java snippets") or ("van quang code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh java java snippets") OR ("van quang code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh java java snippets ) or ( van quang code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh java java snippets") or ("van quang code snippets"))) or ("locating bug code snippets"))*.