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