Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong bac do snippets" » "dong bang do snippets", "dong luc do snippets", "dong hoc do snippets", "dong bac bo snippets", "dong ban do snippets", "dong bac ho 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: (((("dong bac do snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong bac do snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong bac do snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong bac do snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.