Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"than kinh co snippets" » "than kinh do snippets", "than tinh co snippets", "than trinh co snippets", "thanh kinh co snippets", "phan kinh co snippets", "tran kinh co 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: (((("than kinh co snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("than kinh co snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than kinh co snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than kinh co snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.