Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thiet hai du snippets" » "thiet bi du snippets", "thi hai du snippets", "thien tai du snippets", "thiet hai vu snippets", "thiet tai du snippets", "thiet hai di 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: (((("thiet hai 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: (((("thiet hai du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thiet hai du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thiet hai du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.