Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho toi du snippets" » "pho voi du snippets", "nho toi du snippets", "cho tuoi du snippets", "pho toi uu snippets", "pho tri du snippets", "pho toi da snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("pho toi du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pho toi du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho toi du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho toi du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.