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