Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao van bon snippets" » "dao van bon snippets", "ho van bon snippets", "cao van bon snippets", "hao van ban snippets", "hao van dong snippets", "hao van cong 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: (((("hao van bon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hao van bon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao van bon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao van bon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.