Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"pha quoc cao snippets" » "pha quoc code snippets", "phan quoc cao snippets", "phap quoc cao snippets", "phu quoc cao snippets", "pha quoc bao snippets", "pha quoc cac snippets", "pha quoc cho 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 quoc cao 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 quoc cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( pha quoc cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha quoc cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.