Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu song du snippets" » "hue song du snippets", "huu son du snippets", "huu dong du snippets", "huu song da snippets", "huu mong du snippets", "huu song ngu 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: (((("huu song 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: (((("huu song du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu song du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu song du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.