Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan hieu da snippets" » "phan hieu code snippets", "van hieu da snippets", "phan kien da snippets", "gian hieu da snippets", "phan hieu dac snippets", "phan hieu dia snippets", "phan hieu va 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 hieu 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 hieu da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan hieu da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan hieu da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.