Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan ngoc do snippets" » "phan ngoc code snippets", "pham ngoc do snippets", "tran ngoc do snippets", "van ngoc do snippets", "phan ngoc de snippets", "phan goc do snippets", "phan ngoc du snippets"
"python using java snippets" » "python using data 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: (((("phan ngoc do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan ngoc do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan ngoc do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan ngoc do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.