Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"pha du cau snippets" » "pha du code snippets", "pham duc cau snippets", "pham duy cau snippets", "phan duc cau snippets", "pha cu cau snippets", "pha da cau snippets", "pha di cau 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: (((("pha du cau 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 du cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( pha du cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha du cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.