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