Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"dan think java snippets" » "dan trinh java snippets", "dan thi java snippets", "van thinh java snippets", "dan than java snippets"
"dung cong co snippets" » "dung trong co snippets", "dung dong co snippets", "dung cong cu snippets", "dung cong so 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: (((("dan think java snippets") or ("dung cong co snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan think java snippets") OR ("dung cong co snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dan think java snippets ) or ( dung cong co snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan think java snippets") or ("dung cong co snippets"))) or ("locating bugs code snippets"))*.