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