Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phoi thai du snippets" » "phoi tai du snippets", "pho thai du snippets", "phong thai du snippets", "phoi thai do snippets", "phoi thai xu snippets", "phoi thap du 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: (((("phoi thai 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: (((("phoi thai du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phoi thai du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phoi thai du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.