Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan van due snippets" » "luan van due snippets", "quan va due snippets", "quan luan due snippets", "quan van de snippets", "quan van duy snippets", "quan van 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: (((("quan van due snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan van due snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan van due snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan van due snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.