Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao dieu can snippets" » "da dieu can snippets", "dao hieu can snippets", "cao dieu can snippets", "dao dieu hanh snippets", "dao tiep can snippets", "dao dieu cua 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: (((("dao dieu 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: (((("dao dieu can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao dieu can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao dieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.