Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"van dinh doi snippets" » "van minh doi snippets", "van dich doi snippets", "va dinh doi snippets", "van dinh moi snippets", "van tinh doi snippets", "van dinh toi 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: (((("van dinh doi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van dinh doi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van dinh doi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dinh doi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.