Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan ngoc da snippets" » "phan ngoc code snippets", "pham ngoc da snippets", "tran ngoc da snippets", "van ngoc da snippets", "phan ngoc ha snippets", "phan ngoc de 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 da 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 da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan ngoc da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan ngoc da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.