Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham khao de snippets" » "pham khao de snippets", "tam khao de snippets", "than khao de snippets", "tham khac de snippets", "tham khai de snippets", "tham thao de 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: (((("tham khao 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: (((("tham khao de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham khao de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham khao de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.