Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dau trong java snippets" » "dau trinh java snippets", "dat trong java snippets", "dao trong java snippets", "dai trong java snippets"
"using data java snippets" » "using java java snippets", "using sat java snippets", "missing data java 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: (((("dau trong java snippets") or ("using data java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau trong java snippets") OR ("using data java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dau trong java snippets ) or ( using data java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau trong java snippets") or ("using data java snippets"))) or ("locating bug core snippets"))*.