Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu cua me snippets" » "hieu qua me snippets", "dieu cua me snippets", "bieu cua me snippets", "hieu cua mes snippets", "hieu cha me snippets", "hieu ca me 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: (((("hieu cua me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu cua me snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu cua me snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu cua me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.