Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vuong thu do snippets" » "vuong thuc do snippets", "vuong thi do snippets", "duong thu do snippets", "vuong thuy do snippets", "vuong khu do snippets", "vuong tu do 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 thu do 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 thu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vuong thu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vuong thu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.