Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"gian doc cac snippets" » "gian dac cac snippets", "gian don cac snippets", "giam doc cac snippets", "gian duoc cac snippets", "gian hoc cac snippets", "gian do cac 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: (((("gian doc cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian doc cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian doc cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian doc cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.