Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"de ung loai snippets" » "de dung loai snippets", "de dang loai snippets", "de dung hoai snippets", "do ung loai snippets", "ke ung loai 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: (((("de ung loai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("de ung loai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( de ung loai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("de ung loai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.