Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi hieu du snippets" » "thi chieu du snippets", "thi hien du snippets", "thi dieu du snippets", "thi hieu su snippets", "thi hiem du 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 du 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 du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi hieu du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi hieu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.