Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"anh ban chan snippets" » "anh dan chan snippets", "anh ban than snippets", "anh ban nhan snippets", "anh bang chan snippets", "anh bai chan snippets", "anh van chan 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: (((("anh ban chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh ban chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh ban chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh ban chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.