Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi dieu cap snippets" » "thi lien cap snippets", "thi hien cap snippets", "vi dieu cap snippets", "thi dieu can snippets", "thi dieu cam snippets", "thi diem cap 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: (((("thi dieu cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi dieu cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi dieu cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi dieu cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.