Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu luat so snippets" » "cuu luat so snippets", "hieu luat so snippets", "thue luat so snippets", "huu thuat so snippets", "huu luat bao 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 luat so 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 luat so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu luat so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu luat so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.