Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van doanh java snippets" » "van doanh va snippets", "toan doanh java snippets", "van dong java snippets", "van thanh 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: (((("van doanh 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: (((("van doanh java snippets") OR ("using data java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van doanh java snippets ) or ( using data java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van doanh java snippets") or ("using data java snippets"))) or ("locating bug core snippets"))*.