Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan nhat mon snippets" » "la nhat mon snippets", "lon nhat mon snippets", "san nhat mon snippets", "lan nhap mon snippets", "lan nhat moi snippets", "lan hat mon 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 mon 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 mon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan nhat mon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan nhat mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.