Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vuong le du snippets" » "xuong len du snippets", "vuong qh du snippets", "trong le du snippets", "vuong le duc snippets", "vuong le duy snippets", "vuong ly 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: (((("vuong le 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: (((("vuong le du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vuong le du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vuong le du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.