Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dieu tinh do snippets" » "diep tinh do snippets", "lieu tinh do snippets", "dien tinh do snippets", "dieu trinh do snippets", "dieu tinh doi snippets", "dieu tinh da 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: (((("dieu tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dieu tinh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dieu tinh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dieu tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.