Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"luong java java snippets" » "luong va java snippets", "luong java java slippers"
"van dong code snippets" » "van dong co snippets", "van dong che snippets", "van dong cong snippets", "van dong code slippers"

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: (((("luong java java snippets") or ("van dong code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong java java snippets") OR ("van dong code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( luong java java snippets ) or ( van dong code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong java java snippets") or ("van dong code snippets"))) or ("locating bugs code snippets"))*.