Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim dung voi snippets" » "tin dung voi snippets", "kim dung von snippets", "kim dung doi snippets", "kim dung vi 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: (((("kim dung 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: (((("kim dung voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim dung voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim dung voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.