Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chau van can snippets" » "chu van can snippets", "chao van can snippets", "pham van can snippets", "chau van canh snippets", "chau van ban snippets", "chau ban can 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 can 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 can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chau van can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chau van can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.