Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"du hieu 10 snippets" » "duc hieu 10 snippets", "du lieu 10 snippets", "de hieu 10 snippets", "du hieu 220 snippets", "du hieu 10 slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("du hieu 10 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("du hieu 10 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( du hieu 10 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("du hieu 10 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.