Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han tap cho snippets" » "han tai cho snippets", "toan tap cho snippets", "nhan tai cho snippets", "han tap co snippets", "han cap cho snippets", "han tap chi 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: (((("han tap cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han tap cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tap cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tap cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.