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