Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"web vuong le snippets" » "web huong le snippets", "te vuong le snippets", "web song le snippets", "web xuong len snippets", "web vuong qh snippets", "web trong le 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: (((("web vuong le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("web vuong le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( web vuong le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("web vuong le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.