Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ben thi hong snippets" » "ben thi cong snippets", "ben thi phuong snippets", "ben thi hanh snippets", "ban thi hong snippets", "ben chi hong snippets", "yen thi hong 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: (((("ben thi hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ben thi hong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ben thi hong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ben thi hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.