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