Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho cu voi snippets" » "cho cu voi snippets", "pho tu voi snippets", "pho cuu voi snippets", "pho su voi snippets", "pho xu voi 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 cu voi 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 cu voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho cu voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho cu voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.