Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chau van do snippets" » "chu van do snippets", "chao van do snippets", "pham van do snippets", "chau van dao snippets", "chau van de snippets", "chau van 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: (((("chau van do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chau van do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chau van do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chau van do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.