Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan nhat lon snippets" » "la nhat lon snippets", "lon nhat lon snippets", "san nhat lon snippets", "lan nhat loi snippets", "lan chat long snippets", "lan nhat linh 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: (((("lan nhat lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan nhat lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan nhat lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan nhat lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.