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