Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than du voi snippets" » "than duc voi snippets", "toan du voi snippets", "han du voi snippets", "than dua voi snippets", "than da voi snippets", "than do voi 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: (((("than du voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("than du voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than du voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than du voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.